Merge pull request #235 from AliSoftware/develop

Release 7.1.1
bump version to 7.1.1
2019-12-27 11:36:42 +00:00 · 2019-12-27 11:14:55 +00:00 · 2019-12-27 11:07:21 +00:00 · 2019-11-15 11:53:25 +00:00 · 2019-11-13 13:16:52 +00:00 · 2019-11-11 14:41:08 +00:00
68 changed files with 3215 additions and 2435 deletions
@@ -36,3 +36,4 @@ Carthage
 # SPM
 .build/
 Packages
+.swiftpm
@@ -1,7 +1,3 @@
-env:
-  global:
-    - MODULE_NAME=Dip
-
 matrix:
  allow_failures:
    - os: linux
@@ -9,16 +5,27 @@ matrix:
    - script:
        - set -o pipefail && xcodebuild test -workspace Dip.xcworkspace -scheme Dip -sdk iphonesimulator -destination 'platform=iOS Simulator,name=iPhone 6,OS=latest' ONLY_ACTIVE_ARCH=NO | xcpretty -c
        - set -o pipefail && xcodebuild test -workspace Dip.xcworkspace -scheme Dip -sdk macosx -destination 'platform=macOS,arch=x86_64' ONLY_ACTIVE_ARCH=NO | xcpretty -c
-        - set -o pipefail && xcodebuild test -workspace Dip.xcworkspace -scheme Dip -sdk appletvsimulator -destination 'platform=tvOS Simulator,name=Apple TV 1080p,OS=latest' ONLY_ACTIVE_ARCH=NO | xcpretty -c
-        - set -o pipefail && xcodebuild -workspace Dip.xcworkspace -scheme Dip -sdk watchsimulator -destination 'platform=watchOS Simulator,name=Apple Watch - 38mm,OS=latest' ONLY_ACTIVE_ARCH=NO | xcpretty - c
-        - set -o pipefail && xcodebuild test -workspace Dip.xcworkspace -scheme DipSampleApp -sdk iphonesimulator -destination 'platform=iOS Simulator,name=iPhone 6,OS=latest' ONLY_ACTIVE_ARCH=NO | xcpretty -c
-        - pod lib lint --quick
+        # - pod spec lint --allow-warnings
        - carthage build --no-skip-current
+        - swift package clean && swift build && swift test
      os: osx
-      osx_image: xcode8
+      osx_image: xcode10.2
      language: objective-c
+      before_install:
+        - gem install cocoapods --version 1.8.4 --no-document
    - script:
-        - swift build --clean && swift build && swift test
+        - set -o pipefail && xcodebuild test -workspace Dip.xcworkspace -scheme Dip -sdk iphonesimulator -destination 'platform=iOS Simulator,name=iPhone 11,OS=latest' ONLY_ACTIVE_ARCH=NO | xcpretty -c
+        - set -o pipefail && xcodebuild test -workspace Dip.xcworkspace -scheme Dip -sdk macosx -destination 'platform=macOS,arch=x86_64' ONLY_ACTIVE_ARCH=NO | xcpretty -c
+        # - pod spec lint --allow-warnings
+        - carthage build --no-skip-current
+        - swift package clean && swift build && swift test
+      os: osx
+      osx_image: xcode11.2
+      language: objective-c
+      before_install:
+        - gem install cocoapods --version 1.8.4 --no-document
+    - script:
+        - swift package clean && swift build && swift test
      os: linux
      dist: trusty
      sudo: required
@@ -26,11 +33,25 @@ matrix:
      before_install:
        - wget -q -O - https://swift.org/keys/all-keys.asc | gpg --import -
        - cd ..
-        - export SWIFT_VERSION=swift-DEVELOPMENT-SNAPSHOT-2016-09-07-a
-        - wget https://swift.org/builds/development/ubuntu1404/$SWIFT_VERSION/$SWIFT_VERSION-ubuntu14.04.tar.gz
+        - export SWIFT_VERSION=swift-5.1-RELEASE
+        - wget https://swift.org/builds/swift-5.1-release/ubuntu1404/$SWIFT_VERSION/$SWIFT_VERSION-ubuntu14.04.tar.gz
        - tar xzf $SWIFT_VERSION-ubuntu14.04.tar.gz
        - export PATH="${PWD}/${SWIFT_VERSION}-ubuntu14.04/usr/bin:${PATH}"
-        - cd $MODULE_NAME
+        - cd Dip
+    - script:
+        - swift package clean && swift build && swift test
+      os: linux
+      dist: trusty
+      sudo: required
+      language: generic
+      before_install:
+        - wget -q -O - https://swift.org/keys/all-keys.asc | gpg --import -
+        - cd ..
+        - export SWIFT_VERSION=swift-5.0-RELEASE
+        - wget https://swift.org/builds/swift-5.0-release/ubuntu1404/$SWIFT_VERSION/$SWIFT_VERSION-ubuntu14.04.tar.gz
+        - tar xzf $SWIFT_VERSION-ubuntu14.04.tar.gz
+        - export PATH="${PWD}/${SWIFT_VERSION}-ubuntu14.04/usr/bin:${PATH}"
+        - cd Dip

 notifications:
  email: false
@@ -1,5 +1,88 @@
 # CHANGELOG

+## Develop
+
+## 7.1.1
+
+* Fixed using `StoryboardInstantiatable` with SPM  ([#233](https://github.com/AliSoftware/Dip/pull/233)).
+
+## 7.1.0
+
+* You can now use a shorthand syntax for resolving a single property using a key path, i.e. `resolvingProperty(\.value)`.
+* Swift 5.0 support ([#224](https://github.com/AliSoftware/Dip/pull/224)).
+* Fixed resolving nested types with the same local names ([#221](https://github.com/AliSoftware/Dip/pull/221)).
+* `@Injected` and `@IntectedWeak` property wrappers ([#225](https://github.com/AliSoftware/Dip/pull/225)).
+* Thread safety can be disabled on container level.
+
+## 7.0.1
+
+* Added a workaround for Swift 4.2 regression related to retaining weak properties ([#214](https://github.com/AliSoftware/Dip/issues/214)).
+  For that auto-injection can be disabled or enabled for the whole container or individula registrations.
+
+## 7.0.0
+
+* Swift 4.2 support.
+* Fixed some issues when reusing instances previously resolved as optionals.
+* Dip-UI is now part of Dip.
+
+## 6.1
+
+* Swift 4.1 support.
+* Fixed crashes resolving singletons using collaborating containers.
+  [#179](https://github.com/AliSoftware/Dip/pull/179), [@trimmurrti](https://github.com/trimmurrti)
+  [#182](https://github.com/AliSoftware/Dip/pull/182), [@tapsandswipes](https://github.com/tapsandswipes)
+
+## 6.0
+
+* Swift 4 support
+* Fixed unneeded reuse of singletons in collaborating containers. 
+  Containers now first attempt to autowire components and fallback to collaboration when it fails.  
+  [#169](https://github.com/AliSoftware/Dip/issues/169), [@ilyapuchka](https://github.com/ilyapuchka)
+
+## 5.1
+
+* Dropped Swift 2.3 support.  
+  [#150](https://github.com/AliSoftware/Dip/issues/150), [@ilyapuchka](https://github.com/ilyapuchka)
+* Added custom logging function.  
+  [#146](https://github.com/AliSoftware/Dip/issues/146), [@Pr0Ger](https://github.com/Pr0Ger)
+  
+#### Fixed
+
+* Fixed Swift 3.1 warnings.  
+  [#145](https://github.com/AliSoftware/Dip/issues/145), [@DenHeadless](https://github.com/DenHeadless)
+* Fixed collaboration shared references.  
+  [#151](https://github.com/AliSoftware/Dip/issues/151), [@ilyapuchka](https://github.com/ilyapuchka)
+* Fixed autowiring when using tags.  
+  [#154](https://github.com/AliSoftware/Dip/issues/154), [@ilyapuchka](https://github.com/ilyapuchka)
+
+## 5.0.4
+
+#### Fixed
+
+* Fixed broken compatibility for Swift 2.3 API in `resolve(tag:arguments:)` method.  
+  [#135](https://github.com/AliSoftware/Dip/issues/135), [@ilyapuchka](https://github.com/ilyapuchka)
+  
+## 5.0.3
+
+* Added Swift 2.3 compatibility. `swift2.3` brunch is no longer maintained.  
+  [#127](https://github.com/AliSoftware/Dip/issues/127), [@ilyapuchka](https://github.com/ilyapuchka)
+
+#### Fixed
+
+* Fixed reusing instances registered with `WeakSingleton` scope  
+  [#129](https://github.com/AliSoftware/Dip/issues/129), [@ilyapuchka](https://github.com/ilyapuchka)
+
+## 5.0.2
+
+#### Fixed
+
+* Fixed Swift 3 issues related to reflection and IUO  
+  [#125](https://github.com/AliSoftware/Dip/issues/125), [@ilyapuchka](https://github.com/ilyapuchka)
+
+## 5.0.1
+
+This release is the same as 5.0.0 and only fixes CocoaPods speck pushed to trunk without macOS, tvOS and watchOS deployment targets. Please use this release instead of 5.0.0 if you integrate Dip via Cocoapods.
+
 ## 5.0.0

 * Migrated to Swift 3.0  
@@ -1,6 +1,6 @@
 Pod::Spec.new do |s|
  s.name             = "Dip"
-  s.version          = "5.0.0"
+  s.version          = "7.1.1"
  s.summary          = "Dependency Injection for Swift made easy."

  s.description      = <<-DESC
@@ -11,7 +11,7 @@ Pod::Spec.new do |s|

  s.homepage         = "https://github.com/AliSoftware/Dip"
  s.license          = 'MIT'
-  s.authors          = { "Olivier Halligon" => "olivier@halligon.net", "Ilya Puchka" => "ilya@puchka.me" }
+  s.authors          = { "Olivier Halligon" => "olivier@halligon.net", "Ilya Puchka" => "ilyapuchka@gmail.com" }
  s.source           = { :git => "https://github.com/AliSoftware/Dip.git", :tag => s.version.to_s }
  s.social_media_url = 'https://twitter.com/aligatr'

@@ -23,4 +23,6 @@ Pod::Spec.new do |s|
  s.requires_arc = true

  s.source_files = 'Sources/**/*.swift'
+
+  s.swift_version = "5.0", "5.1"
 end
@@ -0,0 +1,8 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<!DOCTYPE plist PUBLIC "-//Apple//DTD PLIST 1.0//EN" "http://www.apple.com/DTDs/PropertyList-1.0.dtd">
+<plist version="1.0">
+<dict>
+	<key>IDEDidComputeMac32BitWarning</key>
+	<true/>
+</dict>
+</plist>
@@ -14,6 +14,7 @@
 		0919F4D61C16417B00DC3B10 /* RuntimeArguments.swift in Sources */ = {isa = PBXBuildFile; fileRef = 0919F4CC1C16417000DC3B10 /* RuntimeArguments.swift */; };
 		095F829C1D043B41008CD706 /* TypeForwarding.swift in Sources */ = {isa = PBXBuildFile; fileRef = 095F829B1D043B41008CD706 /* TypeForwarding.swift */; };
 		0982AF0C1C5183A000B62463 /* Utils.swift in Sources */ = {isa = PBXBuildFile; fileRef = 0982AF0B1C5183A000B62463 /* Utils.swift */; };
+		09871B411DAA6BF300B40B91 /* Compatibility.swift in Sources */ = {isa = PBXBuildFile; fileRef = 09871B401DAA6BF300B40B91 /* Compatibility.swift */; };
 		09873F561C1E0237000C02F6 /* AutoInjection.swift in Sources */ = {isa = PBXBuildFile; fileRef = 09873F551C1E0237000C02F6 /* AutoInjection.swift */; };
 		09B036001C5D2B83001EA5B7 /* AutoWiring.swift in Sources */ = {isa = PBXBuildFile; fileRef = 09B035FF1C5D2B83001EA5B7 /* AutoWiring.swift */; };
 		09BD350E1D84E30D00B33E53 /* AutoInjectionTests.swift in Sources */ = {isa = PBXBuildFile; fileRef = 09BD35041D84E30D00B33E53 /* AutoInjectionTests.swift */; };
@@ -26,6 +27,12 @@
 		09BD35151D84E30D00B33E53 /* ThreadSafetyTests.swift in Sources */ = {isa = PBXBuildFile; fileRef = 09BD350B1D84E30D00B33E53 /* ThreadSafetyTests.swift */; };
 		09BD35161D84E30D00B33E53 /* TypeForwardingTests.swift in Sources */ = {isa = PBXBuildFile; fileRef = 09BD350C1D84E30D00B33E53 /* TypeForwardingTests.swift */; };
 		09BD35171D84E30D00B33E53 /* Utils.swift in Sources */ = {isa = PBXBuildFile; fileRef = 09BD350D1D84E30D00B33E53 /* Utils.swift */; };
+		09FC48071DAA9AC700566AA8 /* Resolve.swift in Sources */ = {isa = PBXBuildFile; fileRef = 09FC48051DAA9AC700566AA8 /* Resolve.swift */; };
+		09FC480F1DAA9CAF00566AA8 /* Register.swift in Sources */ = {isa = PBXBuildFile; fileRef = 09FC480C1DAA9CAF00566AA8 /* Register.swift */; };
+		09FC48181DAAA53100566AA8 /* DipError.swift in Sources */ = {isa = PBXBuildFile; fileRef = 09FC48161DAAA53100566AA8 /* DipError.swift */; };
+		09FC481E1DAAA8F900566AA8 /* ComponentScope.swift in Sources */ = {isa = PBXBuildFile; fileRef = 09FC481C1DAAA8F900566AA8 /* ComponentScope.swift */; };
+		63937A6A21524C0B00AEE75A /* StoryboardInstantiatable.swift in Sources */ = {isa = PBXBuildFile; fileRef = 63937A6921524C0B00AEE75A /* StoryboardInstantiatable.swift */; };
+		63937A6F21524DA300AEE75A /* DipUITests.swift in Sources */ = {isa = PBXBuildFile; fileRef = 63937A6B21524DA200AEE75A /* DipUITests.swift */; };
 /* End PBXBuildFile section */

 /* Begin PBXContainerItemProxy section */
@@ -49,6 +56,7 @@
 		0919F4D11C16417000DC3B10 /* Info.plist */ = {isa = PBXFileReference; lastKnownFileType = text.plist.xml; path = Info.plist; sourceTree = "<group>"; };
 		095F829B1D043B41008CD706 /* TypeForwarding.swift */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = sourcecode.swift; name = TypeForwarding.swift; path = ../../Sources/TypeForwarding.swift; sourceTree = "<group>"; };
 		0982AF0B1C5183A000B62463 /* Utils.swift */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = sourcecode.swift; name = Utils.swift; path = ../../Sources/Utils.swift; sourceTree = "<group>"; };
+		09871B401DAA6BF300B40B91 /* Compatibility.swift */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = sourcecode.swift; name = Compatibility.swift; path = ../../Sources/Compatibility.swift; sourceTree = "<group>"; };
 		09873F551C1E0237000C02F6 /* AutoInjection.swift */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = sourcecode.swift; name = AutoInjection.swift; path = ../../Sources/AutoInjection.swift; sourceTree = "<group>"; };
 		09B035FF1C5D2B83001EA5B7 /* AutoWiring.swift */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = sourcecode.swift; name = AutoWiring.swift; path = ../../Sources/AutoWiring.swift; sourceTree = "<group>"; };
 		09BD35041D84E30D00B33E53 /* AutoInjectionTests.swift */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = sourcecode.swift; name = AutoInjectionTests.swift; path = ../../Tests/DipTests/AutoInjectionTests.swift; sourceTree = "<group>"; };
@@ -61,6 +69,15 @@
 		09BD350B1D84E30D00B33E53 /* ThreadSafetyTests.swift */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = sourcecode.swift; name = ThreadSafetyTests.swift; path = ../../Tests/DipTests/ThreadSafetyTests.swift; sourceTree = "<group>"; };
 		09BD350C1D84E30D00B33E53 /* TypeForwardingTests.swift */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = sourcecode.swift; name = TypeForwardingTests.swift; path = ../../Tests/DipTests/TypeForwardingTests.swift; sourceTree = "<group>"; };
 		09BD350D1D84E30D00B33E53 /* Utils.swift */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = sourcecode.swift; name = Utils.swift; path = ../../Tests/DipTests/Utils.swift; sourceTree = "<group>"; };
+		09FC48051DAA9AC700566AA8 /* Resolve.swift */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = sourcecode.swift; name = Resolve.swift; path = ../../Sources/Resolve.swift; sourceTree = "<group>"; };
+		09FC480C1DAA9CAF00566AA8 /* Register.swift */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = sourcecode.swift; name = Register.swift; path = ../../Sources/Register.swift; sourceTree = "<group>"; };
+		09FC48161DAAA53100566AA8 /* DipError.swift */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = sourcecode.swift; name = DipError.swift; path = ../../Sources/DipError.swift; sourceTree = "<group>"; };
+		09FC481C1DAAA8F900566AA8 /* ComponentScope.swift */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = sourcecode.swift; name = ComponentScope.swift; path = ../../Sources/ComponentScope.swift; sourceTree = "<group>"; };
+		63937A6921524C0B00AEE75A /* StoryboardInstantiatable.swift */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = sourcecode.swift; name = StoryboardInstantiatable.swift; path = ../../Sources/StoryboardInstantiatable.swift; sourceTree = "<group>"; };
+		63937A6B21524DA200AEE75A /* DipUITests.swift */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = sourcecode.swift; name = DipUITests.swift; path = ../../Tests/DipTests/DipUITests.swift; sourceTree = "<group>"; };
+		63937A6C21524DA200AEE75A /* NSStoryboard.storyboard */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = file.storyboard; path = NSStoryboard.storyboard; sourceTree = "<group>"; };
+		63937A6D21524DA300AEE75A /* TVStoryboard.storyboard */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = file.storyboard; path = TVStoryboard.storyboard; sourceTree = "<group>"; };
+		63937A6E21524DA300AEE75A /* UIStoryboard.storyboard */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = file.storyboard; path = UIStoryboard.storyboard; sourceTree = "<group>"; };
 /* End PBXFileReference section */

 /* Begin PBXFrameworksBuildPhase section */
@@ -87,12 +104,18 @@
 			children = (
 				0919F4C91C16417000DC3B10 /* Dip.h */,
 				0919F4CA1C16417000DC3B10 /* Dip.swift */,
+				09FC48161DAAA53100566AA8 /* DipError.swift */,
+				09FC480C1DAA9CAF00566AA8 /* Register.swift */,
+				09FC48051DAA9AC700566AA8 /* Resolve.swift */,
 				0919F4C81C16417000DC3B10 /* Definition.swift */,
+				09FC481C1DAAA8F900566AA8 /* ComponentScope.swift */,
 				0919F4CC1C16417000DC3B10 /* RuntimeArguments.swift */,
 				09873F551C1E0237000C02F6 /* AutoInjection.swift */,
 				09B035FF1C5D2B83001EA5B7 /* AutoWiring.swift */,
 				095F829B1D043B41008CD706 /* TypeForwarding.swift */,
 				0982AF0B1C5183A000B62463 /* Utils.swift */,
+				09871B401DAA6BF300B40B91 /* Compatibility.swift */,
+				63937A6921524C0B00AEE75A /* StoryboardInstantiatable.swift */,
 				0919F4CB1C16417000DC3B10 /* Info.plist */,
 			);
 			path = Dip;
@@ -110,6 +133,10 @@
 				09BD350A1D84E30D00B33E53 /* RuntimeArgumentsTests.swift */,
 				09BD350B1D84E30D00B33E53 /* ThreadSafetyTests.swift */,
 				09BD350C1D84E30D00B33E53 /* TypeForwardingTests.swift */,
+				63937A6B21524DA200AEE75A /* DipUITests.swift */,
+				63937A6C21524DA200AEE75A /* NSStoryboard.storyboard */,
+				63937A6D21524DA300AEE75A /* TVStoryboard.storyboard */,
+				63937A6E21524DA300AEE75A /* UIStoryboard.storyboard */,
 				09BD350D1D84E30D00B33E53 /* Utils.swift */,
 				0919F4D11C16417000DC3B10 /* Info.plist */,
 			);
@@ -174,6 +201,7 @@
 			buildPhases = (
 				0903B35D1C161543002241C1 /* Sources */,
 				0903B35E1C161543002241C1 /* Frameworks */,
+				63937A7721524E3B00AEE75A /* ShellScript */,
 				0903B35F1C161543002241C1 /* Resources */,
 			);
 			buildRules = (
@@ -193,25 +221,26 @@
 			isa = PBXProject;
 			attributes = {
 				LastSwiftUpdateCheck = 0730;
-				LastUpgradeCheck = 0800;
+				LastUpgradeCheck = 1020;
 				ORGANIZATIONNAME = AliSoftware;
 				TargetAttributes = {
 					0903B3571C161543002241C1 = {
 						CreatedOnToolsVersion = 7.1.1;
-						LastSwiftMigration = 0800;
+						LastSwiftMigration = 1020;
 					};
 					0903B3601C161543002241C1 = {
 						CreatedOnToolsVersion = 7.1.1;
-						LastSwiftMigration = 0800;
+						LastSwiftMigration = 1020;
 					};
 				};
 			};
 			buildConfigurationList = 0945268B1BEA1CFF0034E72A /* Build configuration list for PBXProject "Dip" */;
 			compatibilityVersion = "Xcode 3.2";
-			developmentRegion = English;
+			developmentRegion = en;
 			hasScannedForEncodings = 0;
 			knownRegions = (
 				en,
+				Base,
 			);
 			mainGroup = 094526871BEA1CFF0034E72A;
 			productRefGroup = 094526921BEA1CFF0034E72A /* Products */;
@@ -241,17 +270,43 @@
 		};
 /* End PBXResourcesBuildPhase section */

+/* Begin PBXShellScriptBuildPhase section */
+		63937A7721524E3B00AEE75A /* ShellScript */ = {
+			isa = PBXShellScriptBuildPhase;
+			buildActionMask = 2147483647;
+			files = (
+			);
+			inputFileListPaths = (
+			);
+			inputPaths = (
+			);
+			outputFileListPaths = (
+			);
+			outputPaths = (
+			);
+			runOnlyForDeploymentPostprocessing = 0;
+			shellPath = /bin/sh;
+			shellScript = "echo \"${SRCROOT}/DipTests/${STORYBOARD_NAME_PREFIX}Storyboard.storyboard\"\nibtool --compilation-directory \"${TARGET_TEMP_DIR}\" \"${SRCROOT}/DipTests/${STORYBOARD_NAME_PREFIX}Storyboard.storyboard\"\nibtool --link \"${TARGET_BUILD_DIR}/${UNLOCALIZED_RESOURCES_FOLDER_PATH}\" \"${TARGET_TEMP_DIR}/${STORYBOARD_NAME_PREFIX}Storyboard.storyboardc\"\n";
+		};
+/* End PBXShellScriptBuildPhase section */
+
 /* Begin PBXSourcesBuildPhase section */
 		0903B3531C161543002241C1 /* Sources */ = {
 			isa = PBXSourcesBuildPhase;
 			buildActionMask = 2147483647;
 			files = (
+				09871B411DAA6BF300B40B91 /* Compatibility.swift in Sources */,
 				0982AF0C1C5183A000B62463 /* Utils.swift in Sources */,
 				0919F4D51C16417B00DC3B10 /* Definition.swift in Sources */,
+				09FC481E1DAAA8F900566AA8 /* ComponentScope.swift in Sources */,
+				63937A6A21524C0B00AEE75A /* StoryboardInstantiatable.swift in Sources */,
 				09B036001C5D2B83001EA5B7 /* AutoWiring.swift in Sources */,
 				0919F4D41C16417B00DC3B10 /* Dip.swift in Sources */,
+				09FC480F1DAA9CAF00566AA8 /* Register.swift in Sources */,
+				09FC48071DAA9AC700566AA8 /* Resolve.swift in Sources */,
 				095F829C1D043B41008CD706 /* TypeForwarding.swift in Sources */,
 				09873F561C1E0237000C02F6 /* AutoInjection.swift in Sources */,
+				09FC48181DAAA53100566AA8 /* DipError.swift in Sources */,
 				0919F4D61C16417B00DC3B10 /* RuntimeArguments.swift in Sources */,
 			);
 			runOnlyForDeploymentPostprocessing = 0;
@@ -262,6 +317,7 @@
 			files = (
 				09BD35141D84E30D00B33E53 /* RuntimeArgumentsTests.swift in Sources */,
 				09BD35151D84E30D00B33E53 /* ThreadSafetyTests.swift in Sources */,
+				63937A6F21524DA300AEE75A /* DipUITests.swift in Sources */,
 				09BD35121D84E30D00B33E53 /* DefinitionTests.swift in Sources */,
 				09BD350F1D84E30D00B33E53 /* AutoWiringTests.swift in Sources */,
 				09BD35111D84E30D00B33E53 /* ContextTests.swift in Sources */,
@@ -287,6 +343,7 @@
 		0903B3691C161544002241C1 /* Debug */ = {
 			isa = XCBuildConfiguration;
 			buildSettings = {
+				APPLICATION_EXTENSION_API_ONLY = YES;
 				"CODE_SIGN_IDENTITY[sdk=*]" = "";
 				COMBINE_HIDPI_IMAGES = YES;
 				DEFINES_MODULE = YES;
@@ -304,12 +361,14 @@
 				PRODUCT_BUNDLE_IDENTIFIER = com.alisoftware.Dip;
 				PRODUCT_NAME = Dip;
 				SKIP_INSTALL = YES;
+				SWIFT_VERSION = 5.0;
 			};
 			name = Debug;
 		};
 		0903B36A1C161544002241C1 /* Release */ = {
 			isa = XCBuildConfiguration;
 			buildSettings = {
+				APPLICATION_EXTENSION_API_ONLY = YES;
 				"CODE_SIGN_IDENTITY[sdk=*]" = "";
 				COMBINE_HIDPI_IMAGES = YES;
 				DEFINES_MODULE = YES;
@@ -322,6 +381,7 @@
 				PRODUCT_BUNDLE_IDENTIFIER = com.alisoftware.Dip;
 				PRODUCT_NAME = Dip;
 				SKIP_INSTALL = YES;
+				SWIFT_VERSION = 5.0;
 			};
 			name = Release;
 		};
@@ -337,7 +397,13 @@
 				MACOSX_DEPLOYMENT_TARGET = 10.10;
 				PRODUCT_BUNDLE_IDENTIFIER = com.alisoftware.DipTests;
 				PRODUCT_NAME = "$(TARGET_NAME)";
+				STORYBOARD_NAME_PREFIX = NS;
+				"STORYBOARD_NAME_PREFIX[sdk=appletvos*]" = TV;
+				"STORYBOARD_NAME_PREFIX[sdk=appletvsimulator*]" = TV;
+				"STORYBOARD_NAME_PREFIX[sdk=iphoneos*]" = UI;
+				"STORYBOARD_NAME_PREFIX[sdk=iphonesimulator*]" = UI;
 				SWIFT_OPTIMIZATION_LEVEL = "-Onone";
+				SWIFT_VERSION = 5.0;
 			};
 			name = Debug;
 		};
@@ -353,6 +419,8 @@
 				MACOSX_DEPLOYMENT_TARGET = 10.10;
 				PRODUCT_BUNDLE_IDENTIFIER = com.alisoftware.DipTests;
 				PRODUCT_NAME = "$(TARGET_NAME)";
+				STORYBOARD_NAME_PREFIX = "";
+				SWIFT_VERSION = 5.0;
 			};
 			name = Release;
 		};
@@ -360,24 +428,33 @@
 			isa = XCBuildConfiguration;
 			buildSettings = {
 				ALWAYS_SEARCH_USER_PATHS = NO;
+				CLANG_ANALYZER_LOCALIZABILITY_NONLOCALIZED = YES;
 				CLANG_CXX_LANGUAGE_STANDARD = "gnu++0x";
 				CLANG_CXX_LIBRARY = "libc++";
 				CLANG_ENABLE_MODULES = YES;
 				CLANG_ENABLE_OBJC_ARC = YES;
+				CLANG_WARN_BLOCK_CAPTURE_AUTORELEASING = YES;
 				CLANG_WARN_BOOL_CONVERSION = YES;
+				CLANG_WARN_COMMA = YES;
 				CLANG_WARN_CONSTANT_CONVERSION = YES;
+				CLANG_WARN_DEPRECATED_OBJC_IMPLEMENTATIONS = YES;
 				CLANG_WARN_DIRECT_OBJC_ISA_USAGE = YES_ERROR;
 				CLANG_WARN_EMPTY_BODY = YES;
 				CLANG_WARN_ENUM_CONVERSION = YES;
 				CLANG_WARN_INFINITE_RECURSION = YES;
 				CLANG_WARN_INT_CONVERSION = YES;
+				CLANG_WARN_NON_LITERAL_NULL_CONVERSION = YES;
+				CLANG_WARN_OBJC_IMPLICIT_RETAIN_SELF = YES;
+				CLANG_WARN_OBJC_LITERAL_CONVERSION = YES;
 				CLANG_WARN_OBJC_ROOT_CLASS = YES_ERROR;
+				CLANG_WARN_RANGE_LOOP_ANALYSIS = YES;
+				CLANG_WARN_STRICT_PROTOTYPES = YES;
 				CLANG_WARN_SUSPICIOUS_MOVE = YES;
 				CLANG_WARN_UNREACHABLE_CODE = YES;
 				CLANG_WARN__DUPLICATE_METHOD_MATCH = YES;
 				"CODE_SIGN_IDENTITY[sdk=iphoneos*]" = "iPhone Developer";
 				COPY_PHASE_STRIP = NO;
-				CURRENT_PROJECT_VERSION = 5.0.0;
+				CURRENT_PROJECT_VERSION = 7.0.1;
 				DEBUG_INFORMATION_FORMAT = dwarf;
 				ENABLE_STRICT_OBJC_MSGSEND = YES;
 				ENABLE_TESTABILITY = YES;
@@ -402,12 +479,12 @@
 				ONLY_ACTIVE_ARCH = YES;
 				SUPPORTED_PLATFORMS = "macosx watchsimulator iphonesimulator appletvsimulator watchos appletvos iphoneos";
 				SWIFT_OPTIMIZATION_LEVEL = "-Onone";
-				SWIFT_VERSION = 3.0;
+				SWIFT_VERSION = 5.0;
 				TARGETED_DEVICE_FAMILY = "1,2,3,4";
 				TVOS_DEPLOYMENT_TARGET = 9.0;
 				VERSIONING_SYSTEM = "apple-generic";
 				VERSION_INFO_PREFIX = "";
-				WATCHOS_DEPLOYMENT_TARGET = 2.0;
+				WATCHOS_DEPLOYMENT_TARGET = 3.0;
 			};
 			name = Debug;
 		};
@@ -415,24 +492,33 @@
 			isa = XCBuildConfiguration;
 			buildSettings = {
 				ALWAYS_SEARCH_USER_PATHS = NO;
+				CLANG_ANALYZER_LOCALIZABILITY_NONLOCALIZED = YES;
 				CLANG_CXX_LANGUAGE_STANDARD = "gnu++0x";
 				CLANG_CXX_LIBRARY = "libc++";
 				CLANG_ENABLE_MODULES = YES;
 				CLANG_ENABLE_OBJC_ARC = YES;
+				CLANG_WARN_BLOCK_CAPTURE_AUTORELEASING = YES;
 				CLANG_WARN_BOOL_CONVERSION = YES;
+				CLANG_WARN_COMMA = YES;
 				CLANG_WARN_CONSTANT_CONVERSION = YES;
+				CLANG_WARN_DEPRECATED_OBJC_IMPLEMENTATIONS = YES;
 				CLANG_WARN_DIRECT_OBJC_ISA_USAGE = YES_ERROR;
 				CLANG_WARN_EMPTY_BODY = YES;
 				CLANG_WARN_ENUM_CONVERSION = YES;
 				CLANG_WARN_INFINITE_RECURSION = YES;
 				CLANG_WARN_INT_CONVERSION = YES;
+				CLANG_WARN_NON_LITERAL_NULL_CONVERSION = YES;
+				CLANG_WARN_OBJC_IMPLICIT_RETAIN_SELF = YES;
+				CLANG_WARN_OBJC_LITERAL_CONVERSION = YES;
 				CLANG_WARN_OBJC_ROOT_CLASS = YES_ERROR;
+				CLANG_WARN_RANGE_LOOP_ANALYSIS = YES;
+				CLANG_WARN_STRICT_PROTOTYPES = YES;
 				CLANG_WARN_SUSPICIOUS_MOVE = YES;
 				CLANG_WARN_UNREACHABLE_CODE = YES;
 				CLANG_WARN__DUPLICATE_METHOD_MATCH = YES;
 				"CODE_SIGN_IDENTITY[sdk=iphoneos*]" = "iPhone Developer";
 				COPY_PHASE_STRIP = NO;
-				CURRENT_PROJECT_VERSION = 5.0.0;
+				CURRENT_PROJECT_VERSION = 7.0.1;
 				DEBUG_INFORMATION_FORMAT = "dwarf-with-dsym";
 				ENABLE_NS_ASSERTIONS = NO;
 				ENABLE_STRICT_OBJC_MSGSEND = YES;
@@ -450,13 +536,13 @@
 				MTL_ENABLE_DEBUG_INFO = NO;
 				SUPPORTED_PLATFORMS = "macosx watchsimulator iphonesimulator appletvsimulator watchos appletvos iphoneos";
 				SWIFT_OPTIMIZATION_LEVEL = "-Owholemodule";
-				SWIFT_VERSION = 3.0;
+				SWIFT_VERSION = 5.0;
 				TARGETED_DEVICE_FAMILY = "1,2,3,4";
 				TVOS_DEPLOYMENT_TARGET = 9.0;
 				VALIDATE_PRODUCT = YES;
 				VERSIONING_SYSTEM = "apple-generic";
 				VERSION_INFO_PREFIX = "";
-				WATCHOS_DEPLOYMENT_TARGET = 2.0;
+				WATCHOS_DEPLOYMENT_TARGET = 3.0;
 			};
 			name = Release;
 		};
@@ -1,6 +1,6 @@
 <?xml version="1.0" encoding="UTF-8"?>
 <Scheme
-   LastUpgradeVersion = "0800"
+   LastUpgradeVersion = "1020"
   version = "1.3">
   <BuildAction
      parallelizeBuildables = "YES"
@@ -40,8 +40,7 @@
      buildConfiguration = "Debug"
      selectedDebuggerIdentifier = "Xcode.DebuggerFoundation.Debugger.LLDB"
      selectedLauncherIdentifier = "Xcode.DebuggerFoundation.Launcher.LLDB"
-      shouldUseLaunchSchemeArgsEnv = "YES"
-      codeCoverageEnabled = "YES">
+      shouldUseLaunchSchemeArgsEnv = "YES">
      <Testables>
         <TestableReference
            skipped = "NO">
@@ -9,7 +9,7 @@
 	<key>CFBundleIdentifier</key>
 	<string>$(PRODUCT_BUNDLE_IDENTIFIER)</string>
 	<key>CFBundleInfoDictionaryVersion</key>
-	<string>6.0</string>
+	<string>7.1.1</string>
 	<key>CFBundleName</key>
 	<string>$(PRODUCT_NAME)</string>
 	<key>CFBundlePackageType</key>
@@ -9,7 +9,7 @@
 	<key>CFBundleIdentifier</key>
 	<string>$(PRODUCT_BUNDLE_IDENTIFIER)</string>
 	<key>CFBundleInfoDictionaryVersion</key>
-	<string>6.0</string>
+	<string>7.1.1</string>
 	<key>CFBundleName</key>
 	<string>$(PRODUCT_NAME)</string>
 	<key>CFBundlePackageType</key>
@@ -0,0 +1,54 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<document type="com.apple.InterfaceBuilder3.Cocoa.Storyboard.XIB" version="3.0" toolsVersion="14313.18" targetRuntime="MacOSX.Cocoa" propertyAccessControl="none" useAutolayout="YES">
+    <dependencies>
+        <plugIn identifier="com.apple.InterfaceBuilder.CocoaPlugin" version="14313.18"/>
+        <capability name="documents saved in the Xcode 8 format" minToolsVersion="8.0"/>
+    </dependencies>
+    <scenes>
+        <!--Dip View Controller-->
+        <scene sceneID="adI-oe-5KL">
+            <objects>
+                <viewController storyboardIdentifier="DipViewController" id="fzZ-tH-vfC" customClass="DipViewController" customModule="DipTests" sceneMemberID="viewController">
+                    <view key="view" id="vso-jO-9Ex">
+                        <rect key="frame" x="0.0" y="0.0" width="450" height="300"/>
+                        <autoresizingMask key="autoresizingMask"/>
+                    </view>
+                    <userDefinedRuntimeAttributes>
+                        <userDefinedRuntimeAttribute type="string" keyPath="dipTag" value="vc"/>
+                    </userDefinedRuntimeAttributes>
+                </viewController>
+                <customObject id="wjM-mL-nmG" userLabel="First Responder" customClass="NSResponder" sceneMemberID="firstResponder"/>
+            </objects>
+            <point key="canvasLocation" x="311" y="339"/>
+        </scene>
+        <!--Nil Tag View Controller-->
+        <scene sceneID="OhX-tC-zpS">
+            <objects>
+                <viewController storyboardIdentifier="NilTagViewController" id="35S-Ec-qEA" customClass="NilTagViewController" customModule="DipTests" sceneMemberID="viewController">
+                    <view key="view" id="y58-K4-cDZ">
+                        <rect key="frame" x="0.0" y="0.0" width="450" height="300"/>
+                        <autoresizingMask key="autoresizingMask"/>
+                    </view>
+                    <userDefinedRuntimeAttributes>
+                        <userDefinedRuntimeAttribute type="nil" keyPath="dipTag"/>
+                    </userDefinedRuntimeAttributes>
+                </viewController>
+                <customObject id="pvf-jv-8Cj" userLabel="First Responder" customClass="NSResponder" sceneMemberID="firstResponder"/>
+            </objects>
+            <point key="canvasLocation" x="874" y="339"/>
+        </scene>
+        <!--View Controller-->
+        <scene sceneID="Rwu-gt-fAa">
+            <objects>
+                <viewController storyboardIdentifier="ViewController" id="tne-ER-mvb" sceneMemberID="viewController">
+                    <view key="view" id="Kwe-OO-w0D">
+                        <rect key="frame" x="0.0" y="0.0" width="450" height="300"/>
+                        <autoresizingMask key="autoresizingMask"/>
+                    </view>
+                </viewController>
+                <customObject id="0u1-hv-ZtW" userLabel="First Responder" customClass="NSResponder" sceneMemberID="firstResponder"/>
+            </objects>
+            <point key="canvasLocation" x="311" y="729"/>
+        </scene>
+    </scenes>
+</document>
@@ -0,0 +1,75 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<document type="com.apple.InterfaceBuilder.AppleTV.Storyboard" version="3.0" toolsVersion="14313.18" targetRuntime="AppleTV" propertyAccessControl="none" useAutolayout="YES" colorMatched="YES" initialViewController="ctX-Lj-Yrr">
+    <device id="appleTV" orientation="landscape">
+        <adaptation id="light"/>
+    </device>
+    <dependencies>
+        <plugIn identifier="com.apple.InterfaceBuilder.IBCocoaTouchPlugin" version="14283.14"/>
+        <capability name="documents saved in the Xcode 8 format" minToolsVersion="8.0"/>
+    </dependencies>
+    <scenes>
+        <!--Dip View Controller-->
+        <scene sceneID="0jz-eb-APg">
+            <objects>
+                <viewController storyboardIdentifier="DipViewController" id="ctX-Lj-Yrr" customClass="DipViewController" customModule="DipTests" sceneMemberID="viewController">
+                    <layoutGuides>
+                        <viewControllerLayoutGuide type="top" id="TrC-Rh-efi"/>
+                        <viewControllerLayoutGuide type="bottom" id="arQ-XW-qWa"/>
+                    </layoutGuides>
+                    <view key="view" contentMode="scaleToFill" id="syn-UA-YGd">
+                        <rect key="frame" x="0.0" y="0.0" width="200" height="100"/>
+                        <autoresizingMask key="autoresizingMask" widthSizable="YES" heightSizable="YES"/>
+                    </view>
+                    <freeformSimulatedSizeMetrics key="simulatedDestinationMetrics"/>
+                    <size key="freeformSize" width="200" height="100"/>
+                    <userDefinedRuntimeAttributes>
+                        <userDefinedRuntimeAttribute type="string" keyPath="dipTag" value="vc"/>
+                    </userDefinedRuntimeAttributes>
+                </viewController>
+                <placeholder placeholderIdentifier="IBFirstResponder" id="mq6-CB-g6V" userLabel="First Responder" sceneMemberID="firstResponder"/>
+            </objects>
+            <point key="canvasLocation" x="563" y="-228"/>
+        </scene>
+        <!--View Controller-->
+        <scene sceneID="gDU-un-krd">
+            <objects>
+                <viewController storyboardIdentifier="ViewController" id="UwR-h2-tgS" sceneMemberID="viewController">
+                    <layoutGuides>
+                        <viewControllerLayoutGuide type="top" id="qKG-R0-Nkp"/>
+                        <viewControllerLayoutGuide type="bottom" id="vP4-Si-HAL"/>
+                    </layoutGuides>
+                    <view key="view" contentMode="scaleToFill" id="r35-FI-kgS">
+                        <rect key="frame" x="0.0" y="0.0" width="200" height="100"/>
+                        <autoresizingMask key="autoresizingMask" widthSizable="YES" heightSizable="YES"/>
+                    </view>
+                    <freeformSimulatedSizeMetrics key="simulatedDestinationMetrics"/>
+                    <size key="freeformSize" width="200" height="100"/>
+                </viewController>
+                <placeholder placeholderIdentifier="IBFirstResponder" id="AIY-qB-Dbe" userLabel="First Responder" sceneMemberID="firstResponder"/>
+            </objects>
+            <point key="canvasLocation" x="563" y="-16"/>
+        </scene>
+        <!--Nil Tag View Controller-->
+        <scene sceneID="PiH-4i-Txa">
+            <objects>
+                <viewController storyboardIdentifier="NilTagViewController" id="ZLb-1s-1ne" customClass="NilTagViewController" customModule="DipTests" sceneMemberID="viewController">
+                    <layoutGuides>
+                        <viewControllerLayoutGuide type="top" id="arU-Ca-km8"/>
+                        <viewControllerLayoutGuide type="bottom" id="jw1-4B-Xlt"/>
+                    </layoutGuides>
+                    <view key="view" contentMode="scaleToFill" id="NMo-Oi-l7H">
+                        <rect key="frame" x="0.0" y="0.0" width="200" height="100"/>
+                        <autoresizingMask key="autoresizingMask" widthSizable="YES" heightSizable="YES"/>
+                    </view>
+                    <freeformSimulatedSizeMetrics key="simulatedDestinationMetrics"/>
+                    <size key="freeformSize" width="200" height="100"/>
+                    <userDefinedRuntimeAttributes>
+                        <userDefinedRuntimeAttribute type="nil" keyPath="dipTag"/>
+                    </userDefinedRuntimeAttributes>
+                </viewController>
+                <placeholder placeholderIdentifier="IBFirstResponder" id="Cid-Yu-0N6" userLabel="First Responder" sceneMemberID="firstResponder"/>
+            </objects>
+            <point key="canvasLocation" x="821" y="-228"/>
+        </scene>
+    </scenes>
+</document>
@@ -0,0 +1,78 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<document type="com.apple.InterfaceBuilder3.CocoaTouch.Storyboard.XIB" version="3.0" toolsVersion="14313.18" targetRuntime="iOS.CocoaTouch" propertyAccessControl="none" useAutolayout="YES" useTraitCollections="YES" colorMatched="YES" initialViewController="5AO-J3-7R4">
+    <device id="retina4_7" orientation="portrait">
+        <adaptation id="fullscreen"/>
+    </device>
+    <dependencies>
+        <plugIn identifier="com.apple.InterfaceBuilder.IBCocoaTouchPlugin" version="14283.14"/>
+        <capability name="documents saved in the Xcode 8 format" minToolsVersion="8.0"/>
+    </dependencies>
+    <scenes>
+        <!--View Controller-->
+        <scene sceneID="Ole-tM-Q3l">
+            <objects>
+                <viewController storyboardIdentifier="ViewController" id="ehZ-7Y-MeO" sceneMemberID="viewController">
+                    <layoutGuides>
+                        <viewControllerLayoutGuide type="top" id="bZ0-tI-Yi9"/>
+                        <viewControllerLayoutGuide type="bottom" id="UX3-8G-Z4L"/>
+                    </layoutGuides>
+                    <view key="view" contentMode="scaleToFill" id="Jmi-i3-vAY">
+                        <rect key="frame" x="0.0" y="0.0" width="200" height="100"/>
+                        <autoresizingMask key="autoresizingMask" widthSizable="YES" heightSizable="YES"/>
+                        <color key="backgroundColor" red="1" green="1" blue="1" alpha="1" colorSpace="custom" customColorSpace="sRGB"/>
+                    </view>
+                    <freeformSimulatedSizeMetrics key="simulatedDestinationMetrics"/>
+                    <size key="freeformSize" width="200" height="100"/>
+                </viewController>
+                <placeholder placeholderIdentifier="IBFirstResponder" id="H12-WL-igv" userLabel="First Responder" sceneMemberID="firstResponder"/>
+            </objects>
+            <point key="canvasLocation" x="646" y="461"/>
+        </scene>
+        <!--Dip View Controller-->
+        <scene sceneID="Lgf-SY-hfd">
+            <objects>
+                <viewController storyboardIdentifier="DipViewController" id="5AO-J3-7R4" userLabel="Dip View Controller" customClass="DipViewController" customModule="DipTests" sceneMemberID="viewController">
+                    <layoutGuides>
+                        <viewControllerLayoutGuide type="top" id="JYl-DM-U2W"/>
+                        <viewControllerLayoutGuide type="bottom" id="Xg8-gz-BQL"/>
+                    </layoutGuides>
+                    <view key="view" contentMode="scaleToFill" id="aU0-uz-rHf">
+                        <rect key="frame" x="0.0" y="0.0" width="200" height="100"/>
+                        <autoresizingMask key="autoresizingMask" widthSizable="YES" heightSizable="YES"/>
+                        <color key="backgroundColor" red="1" green="1" blue="1" alpha="1" colorSpace="custom" customColorSpace="sRGB"/>
+                    </view>
+                    <freeformSimulatedSizeMetrics key="simulatedDestinationMetrics"/>
+                    <size key="freeformSize" width="200" height="100"/>
+                    <userDefinedRuntimeAttributes>
+                        <userDefinedRuntimeAttribute type="string" keyPath="dipTag" value="vc"/>
+                    </userDefinedRuntimeAttributes>
+                </viewController>
+                <placeholder placeholderIdentifier="IBFirstResponder" id="4iF-mX-EX6" userLabel="First Responder" sceneMemberID="firstResponder"/>
+            </objects>
+            <point key="canvasLocation" x="646" y="200"/>
+        </scene>
+        <!--Dip View Controller-->
+        <scene sceneID="AUA-qF-7ky">
+            <objects>
+                <viewController storyboardIdentifier="NilTagViewController" id="fFP-hb-OdS" userLabel="Dip View Controller" customClass="NilTagViewController" customModule="DipTests" sceneMemberID="viewController">
+                    <layoutGuides>
+                        <viewControllerLayoutGuide type="top" id="Sio-ii-jPl"/>
+                        <viewControllerLayoutGuide type="bottom" id="bhs-zK-dln"/>
+                    </layoutGuides>
+                    <view key="view" contentMode="scaleToFill" id="4xq-UV-htt">
+                        <rect key="frame" x="0.0" y="0.0" width="200" height="100"/>
+                        <autoresizingMask key="autoresizingMask" widthSizable="YES" heightSizable="YES"/>
+                        <color key="backgroundColor" red="1" green="1" blue="1" alpha="1" colorSpace="custom" customColorSpace="sRGB"/>
+                    </view>
+                    <freeformSimulatedSizeMetrics key="simulatedDestinationMetrics"/>
+                    <size key="freeformSize" width="200" height="100"/>
+                    <userDefinedRuntimeAttributes>
+                        <userDefinedRuntimeAttribute type="nil" keyPath="dipTag"/>
+                    </userDefinedRuntimeAttributes>
+                </viewController>
+                <placeholder placeholderIdentifier="IBFirstResponder" id="xvW-k9-I9y" userLabel="First Responder" sceneMemberID="firstResponder"/>
+            </objects>
+            <point key="canvasLocation" x="898" y="200"/>
+        </scene>
+    </scenes>
+</document>
@@ -1,176 +1,2 @@
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-  "offset": 54,
-  "remove": 6,
-  "text": "open",
- },
- {
-  "file": "/Users/ilya/Documents/Developer/iPhoneProjects/Dip/DipPlayground.playground/Sources/Models.swift",
-  "offset": 111,
-  "remove": 6,
-  "text": "open",
- },
- {
-  "file": "/Users/ilya/Documents/Developer/iPhoneProjects/Dip/DipPlayground.playground/Sources/Models.swift",
-  "offset": 168,
-  "remove": 6,
-  "text": "open",
- },
- {
-  "file": "/Users/ilya/Documents/Developer/iPhoneProjects/Dip/DipPlayground.playground/Sources/Models.swift",
-  "offset": 228,
-  "remove": 6,
-  "text": "open",
- },
- {
-  "file": "/Users/ilya/Documents/Developer/iPhoneProjects/Dip/DipPlayground.playground/Sources/Models.swift",
-  "offset": 269,
-  "remove": 6,
-  "text": "open",
- },
- {
-  "file": "/Users/ilya/Documents/Developer/iPhoneProjects/Dip/DipPlayground.playground/Sources/Models.swift",
-  "offset": 332,
-  "remove": 3,
-  "text": " ",
- },
- {
-  "file": "/Users/ilya/Documents/Developer/iPhoneProjects/Dip/DipPlayground.playground/Sources/Models.swift",
-  "offset": 472,
-  "remove": 6,
-  "text": "open",
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-  "file": "/Users/ilya/Documents/Developer/iPhoneProjects/Dip/DipPlayground.playground/Sources/Models.swift",
-  "offset": 508,
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-  "file": "/Users/ilya/Documents/Developer/iPhoneProjects/Dip/DipPlayground.playground/Sources/Models.swift",
-  "offset": 613,
-  "remove": 6,
-  "text": "open",
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-  "file": "/Users/ilya/Documents/Developer/iPhoneProjects/Dip/DipPlayground.playground/Sources/Models.swift",
-  "offset": 649,
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-  "file": "/Users/ilya/Documents/Developer/iPhoneProjects/Dip/DipPlayground.playground/Sources/Models.swift",
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-  "remove": 6,
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-  "file": "/Users/ilya/Documents/Developer/iPhoneProjects/Dip/DipPlayground.playground/Sources/Models.swift",
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-  "file": "/Users/ilya/Documents/Developer/iPhoneProjects/Dip/DipPlayground.playground/Sources/Models.swift",
-  "offset": 1149,
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-  "file": "/Users/ilya/Documents/Developer/iPhoneProjects/Dip/DipPlayground.playground/Sources/Models.swift",
-  "offset": 1265,
-  "remove": 6,
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-  "file": "/Users/ilya/Documents/Developer/iPhoneProjects/Dip/DipPlayground.playground/Sources/Models.swift",
-  "offset": 1473,
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- },
- {
-  "file": "/Users/ilya/Documents/Developer/iPhoneProjects/Dip/DipPlayground.playground/Sources/Models.swift",
-  "offset": 1516,
-  "remove": 6,
-  "text": "open",
- },
- {
-  "file": "/Users/ilya/Documents/Developer/iPhoneProjects/Dip/DipPlayground.playground/Sources/Models.swift",
-  "offset": 1569,
-  "remove": 6,
-  "text": "open",
- },
- {
-  "file": "/Users/ilya/Documents/Developer/iPhoneProjects/Dip/DipPlayground.playground/Sources/Models.swift",
-  "offset": 1643,
-  "remove": 6,
-  "text": "open",
- },
- {
-  "file": "/Users/ilya/Documents/Developer/iPhoneProjects/Dip/DipPlayground.playground/Sources/Models.swift",
-  "offset": 1687,
-  "remove": 6,
-  "text": "open",
- },
- {
-  "file": "/Users/ilya/Documents/Developer/iPhoneProjects/Dip/DipPlayground.playground/Sources/Models.swift",
-  "offset": 1762,
-  "remove": 6,
-  "text": "open",
- },
- {
-  "file": "/Users/ilya/Documents/Developer/iPhoneProjects/Dip/DipPlayground.playground/Sources/Models.swift",
-  "offset": 1806,
-  "remove": 6,
-  "text": "open",
- },
- {
-  "file": "/Users/ilya/Documents/Developer/iPhoneProjects/Dip/DipPlayground.playground/Sources/Models.swift",
-  "offset": 1848,
-  "remove": 6,
-  "text": "open",
- },
- {
-  "file": "/Users/ilya/Documents/Developer/iPhoneProjects/Dip/DipPlayground.playground/Sources/Models.swift",
-  "offset": 2146,
-  "remove": 6,
-  "text": "open",
- },
- {
-  "file": "/Users/ilya/Documents/Developer/iPhoneProjects/Dip/DipPlayground.playground/Sources/Models.swift",
-  "offset": 2315,
-  "remove": 6,
-  "text": "open",
- },
- {
-  "file": "/Users/ilya/Documents/Developer/iPhoneProjects/Dip/DipPlayground.playground/Sources/Models.swift",
-  "offset": 2357,
-  "remove": 6,
-  "text": "open",
- }
-]
+]
@@ -113,10 +113,7 @@ class ServerImp: Server {
    weak var client: ServerClient?
 }

-//There is currently a bug in Swift that causes runtime crash
-//when trying to auto-inject not-NSObject weak property.
-//https://bugs.swift.org/browse/SR-2144
-class ServerClientImp: NSObject, ServerClient {
+class ServerClientImp: ServerClient {
    var server: Server?
    
    init(server: Server) {
@@ -149,10 +146,7 @@ class InjectedServerImp: Server {
    var client: ServerClient? { return injectedClient.value }
 }

-//There is currently a bug in Swift that causes runtime crash 
-//when trying to auto-inject not-NSObject weak property.
-//https://bugs.swift.org/browse/SR-2144
-class InjectedClientImp: NSObject, ServerClient {
+class InjectedClientImp: ServerClient {
    private var injectedServer = Injected<Server>()
    var server: Server? { get { return injectedServer.value } }
 }
@@ -13,7 +13,7 @@ Dip supports three different scopes of objects: _Unique_, _Shared_ and _Singleto
 * The `Unique` scope will make the `DependencyContainer` resolve your type as __a new instance every time__ you call `resolve`. This is the default scope.
 * The `Shared` scope is like `Unique` scope, but it will make the `DependencyContainer` to reuse resolved instances during one (recursive) call to `resolve` method. When this call returns, all resolved instances will be discarded and next call to `resolve` will produce new instances. This scope should be used to resolve [circular dependencies](Circular%20dependencies).
 * The `Singleton` scope will make the `DependencyContainer` retain the instance once resolved the first time, and reuse it in the next calls to `resolve` during the container lifetime.
-* The `EagerSingleton` scope is the same as `Singleton` scope but instances with this cope will be created when you call `bootstrap()` method on the container.
+* The `EagerSingleton` scope is the same as `Singleton` scope but instances with this scope will be created when you call `bootstrap()` method on the container.
 * The `WeakSingleton` scope is the same as `Singleton` scope but instances are stored in container as weak references. This scope can be usefull when you need to recreate object graph without reseting container.

 The `Unique` scope is the default. To set a scope you pass it as an argument to `register` method.
@@ -107,7 +107,7 @@ viewController = try MyViewController(apiClient: container.resolve())
 viewController.apiClient = try container.resolve()

 /*:
-Of cource `DependencyContainer` should not be a singleton too. There is just no need for that because you never should call `DependencyContainer` from inside of your components. That will make it a [service locator antipatter]((http://blog.ploeh.dk/2010/02/03/ServiceLocatorisanAnti-Pattern/)). You may only call `DependencyContainer` from the _Composition root_ - the place where all the components are configured and wired together.
+Of cource `DependencyContainer` should not be a singleton too. There is just no need for that because you never should call `DependencyContainer` from inside of your components. That will make it a [service locator antipattern]((http://blog.ploeh.dk/2010/02/03/ServiceLocatorisanAnti-Pattern/)). You may only call `DependencyContainer` from the _Composition root_ - the place where all the components are configured and wired together.

 Dependency Injection is a pattern (more precisely - a set of patterns) as well as a singleton. And any pattern can be abused. DI can be used in a [wrong way]((http://www.loosecouplings.com/2011/01/dependency-injection-using-di-container.html)), container can easily become a service locator. You should carefully decide when to use DI, you should not inject everything and everywhere and define a protocol for every single class you use. For every tool there is a right time and the same way as singleton can harm you the same way DI and protocols abuse can make your code unnececerry complex.

@@ -0,0 +1,3 @@
+source "https://rubygems.org"
+
+gem "cocoapods", '=1.4.0'
@@ -0,0 +1,76 @@
+GEM
+  remote: https://rubygems.org/
+  specs:
+    CFPropertyList (3.0.0)
+    activesupport (4.2.11)
+      i18n (~> 0.7)
+      minitest (~> 5.1)
+      thread_safe (~> 0.3, >= 0.3.4)
+      tzinfo (~> 1.1)
+    atomos (0.1.3)
+    claide (1.0.2)
+    cocoapods (1.4.0)
+      activesupport (>= 4.0.2, < 5)
+      claide (>= 1.0.2, < 2.0)
+      cocoapods-core (= 1.4.0)
+      cocoapods-deintegrate (>= 1.0.2, < 2.0)
+      cocoapods-downloader (>= 1.1.3, < 2.0)
+      cocoapods-plugins (>= 1.0.0, < 2.0)
+      cocoapods-search (>= 1.0.0, < 2.0)
+      cocoapods-stats (>= 1.0.0, < 2.0)
+      cocoapods-trunk (>= 1.3.0, < 2.0)
+      cocoapods-try (>= 1.1.0, < 2.0)
+      colored2 (~> 3.1)
+      escape (~> 0.0.4)
+      fourflusher (~> 2.0.1)
+      gh_inspector (~> 1.0)
+      molinillo (~> 0.6.4)
+      nap (~> 1.0)
+      ruby-macho (~> 1.1)
+      xcodeproj (>= 1.5.4, < 2.0)
+    cocoapods-core (1.4.0)
+      activesupport (>= 4.0.2, < 6)
+      fuzzy_match (~> 2.0.4)
+      nap (~> 1.0)
+    cocoapods-deintegrate (1.0.2)
+    cocoapods-downloader (1.2.2)
+    cocoapods-plugins (1.0.0)
+      nap
+    cocoapods-search (1.0.0)
+    cocoapods-stats (1.0.0)
+    cocoapods-trunk (1.3.1)
+      nap (>= 0.8, < 2.0)
+      netrc (~> 0.11)
+    cocoapods-try (1.1.0)
+    colored2 (3.1.2)
+    concurrent-ruby (1.1.4)
+    escape (0.0.4)
+    fourflusher (2.0.1)
+    fuzzy_match (2.0.4)
+    gh_inspector (1.1.3)
+    i18n (0.9.5)
+      concurrent-ruby (~> 1.0)
+    minitest (5.11.3)
+    molinillo (0.6.6)
+    nanaimo (0.2.6)
+    nap (1.1.0)
+    netrc (0.11.0)
+    ruby-macho (1.3.1)
+    thread_safe (0.3.6)
+    tzinfo (1.2.5)
+      thread_safe (~> 0.1)
+    xcodeproj (1.7.0)
+      CFPropertyList (>= 2.3.3, < 4.0)
+      atomos (~> 0.1.3)
+      claide (>= 1.0.2, < 2.0)
+      colored2 (~> 3.1)
+      nanaimo (~> 0.2.6)
+
+PLATFORMS
+  ruby
+
+DEPENDENCIES
+  cocoapods (= 1.4.0)
+
+BUNDLED WITH
+   1.16.5
@@ -0,0 +1,8 @@
+import XCTest
+
+import DipTests
+
+var tests = [XCTestCaseEntry]()
+tests += DipTests.__allTests()
+
+XCTMain(tests)
@@ -1,30 +1,15 @@
-//
-// Dip
-//
-// Copyright (c) 2015 Olivier Halligon <olivier@halligon.net>
-//
-// Permission is hereby granted, free of charge, to any person obtaining a copy
-// of this software and associated documentation files (the "Software"), to deal
-// in the Software without restriction, including without limitation the rights
-// to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
-// copies of the Software, and to permit persons to whom the Software is
-// furnished to do so, subject to the following conditions:
-//
-// The above copyright notice and this permission notice shall be included in
-// all copies or substantial portions of the Software.
-//
-// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
-// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
-// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
-// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
-// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
-// OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
-// THE SOFTWARE.
-//
+// swift-tools-version:5.0

 import PackageDescription

 let package = Package(
-    name: "Dip"
+    name: "Dip",
+    products: [
+        .library(name: "Dip", targets: ["Dip"]),
+    ],
+    targets: [
+        .target(name: "Dip", dependencies: [], path: "Sources"),
+        .testTarget(name: "DipTests", dependencies: ["Dip"], path: "Tests"),
+    ]
 )

@@ -5,8 +5,8 @@
 [![Carthage Compatible](https://img.shields.io/badge/Carthage-compatible-4BC51D.svg?style=flat)](https://github.com/Carthage/Carthage)
 [![License](https://img.shields.io/cocoapods/l/Dip.svg?style=flat)](http://cocoapods.org/pods/Dip)
 [![Platform](https://img.shields.io/cocoapods/p/Dip.svg?style=flat)](http://cocoapods.org/pods/Dip)
-[![Swift Version](https://img.shields.io/badge/Linux-compatible-4BC51D.svg?style=flat)](https://developer.apple.com/swift)
-[![Swift Version](https://img.shields.io/badge/Swift-2.2-3.0-F16D39.svg?style=flat)](https://developer.apple.com/swift)
+[![Swift Version](https://img.shields.io/badge/Swift-4.0--4.2-F16D39.svg?style=flat)](https://developer.apple.com/swift)
+[![Swift Version](https://img.shields.io/badge/Linux-4.0--4.2-4BC51D.svg?style=flat)](https://developer.apple.com/swift)

 ![Animated Dipping GIF](cinnamon-pretzels-caramel-dipping.gif)  
 _Photo courtesy of [www.kevinandamanda.com](http://www.kevinandamanda.com/recipes/appetizer/homemade-soft-cinnamon-sugar-pretzel-bites-with-salted-caramel-dipping-sauce.html)_
@@ -17,46 +17,12 @@ _Photo courtesy of [www.kevinandamanda.com](http://www.kevinandamanda.com/recipe

 It's aimed to be as simple as possible yet provide rich functionality usual for DI containers on other platforms. It's inspired by `.NET`'s [Unity Container](https://msdn.microsoft.com/library/ff647202.aspx) and other DI containers.

-* You start by creating `let container = DependencyContainer()` and **registering your dependencies, by associating a _protocol_ or _type_ to a `factory`**.
-* Then you can call `container.resolve()` to **resolve an instance of _protocol_ or _type_** using that `DependencyContainer`.
+* You start by creating `let container = DependencyContainer()` and **registering your dependencies, by associating a _protocol_ or _type_ to a `factory`** using `container.register { MyService() as Service }`.
+* Then you can call `container.resolve() as Service` to **resolve an instance of _protocol_ or _type_** using that `DependencyContainer`.
+* You can easily use Dip along with **Storyboards and Nibs** . There is also a **[code generator](https://github.com/ilyapuchka/dipgen)** that can help to simplify registering new components.

-> You can easily use Dip along with Storyboards and Nibs - checkout [Dip-UI](https://github.com/AliSoftware/Dip-UI) extensions. 
-
-## Documentation & Usage Examples
-
-Dip is completely [documented](http://cocoadocs.org/docsets/Dip/5.0.0/) and comes with a Playground that lets you try all its features and become familiar with API. You can find it in `Dip.xcworkspace`.
-
-> Note: it may happen that you will need to build Dip framework before playground will be able to use it. For that select `Dip-iOS` scheme and build.
-
-You can find bunch of usage examples in a [wiki](../../wiki). 
-
-If your are using [VIPER](https://www.objc.io/issues/13-architecture/viper/) architecture - [here](https://github.com/ilyapuchka/VIPER-SWIFT) is VIPER demo app that uses Dip instead of manual dependency injection.
-
-There are also several blog posts that describe how to use Dip and some of its implementation details:
-
- [IoC container in Swift](http://ilya.puchka.me/ioc-container-in-swift/)
- [IoC container in Swift. Circular dependencies and auto-injection](http://ilya.puchka.me/ioc-container-in-swift-circular-dependencies-and-auto-injection/)
- [Dependency injection with Dip](http://ilya.puchka.me/dependency-injecinjection-with-dip/)
-
-File an issue if you have any question.
-
-
-## Features
-
- **[Scopes](../../wiki/scopes)**. Dip supports 5 different scopes (or life cycle strategies): _Unique_, _Shared_, _Singleton_, _EagerSingleton_, _WeakSingleton_;
- **[Named definitions](../../wiki/named-definitions)**. You can register different factories for the same protocol or type by registering them with [tags]();
- **[Runtime arguments](../../wiki/runtime-arguments)**. You can register factories that accept up to 6 runtime arguments;
- **[Circular dependencies](../../wiki/circular-dependencies)**. Dip can resolve circular dependencies;
- **[Auto-wiring](../../wiki/auto-wiring)** & **[Auto-injection](../../wiki/auto-injection)**. Dip can infer your components' dependencies injected in constructor and automatically resolve them as well as dependencies injected with properties.
- **[Resolving optionals](../../wiki/resolving-optionals)**. Dip is able to resolve constructor or property dependencies defined as optionals.
- **[Type forwarding](../../wiki/type-forwarding)**. You can register the same factory to resolve different types.
- **[Storyboards integration](../../wiki/storyboards-integration)**. You can easily use Dip along with storyboards and Xibs without ever referencing container in your view controller's code;
- **Weakly typed components**. Dip can resolve weak types when they are unknown at compile time.
- **[Easy configuration](../../wiki/containers-collaboration)**. No complex container hierarchy, no unneeded functionality;
- **Thread safety**. Registering and resolving components is thread safe;
- **Helpful error messages and configuration validation**. You can validate your container configuration. If something can not be resolved at runtime Dip throws an error that completely describes the issue;
-
-## Basic usage
+<details>
+<summary>Basic usage</summary>

 ```swift
 import Dip
@@ -82,7 +48,10 @@ class AppDelegate: UIResponder, UIApplicationDelegate {

 ```

-## More sophisticated example
+</details>
+
+<details>
+<summary>More sophisticated example</summary>

 ```swift
 import Dip
@@ -100,6 +69,9 @@ extension DependencyContainer {

 	static func configure() -> DependencyContainer {
 		return DependencyContainer { container in 
+			unowned let container = container
+			DependencyContainer.uiContainers = [container]
+		
 			container.register(tag: "ViewController") { ViewController() }
 			  .resolvingProperties { container, controller in
 				  controller.animationsFactory = try container.resolve() as AnimatonsFactory
@@ -137,49 +109,81 @@ class ViewController {

 ```

+</details>
+
+## Documentation & Usage Examples
+
+Dip is completely [documented](http://cocoadocs.org/docsets/Dip/5.0.0/) and comes with a Playground that lets you try all its features and become familiar with API. You can find it in `Dip.xcworkspace`.
+
+> Note: it may happen that you will need to build Dip framework before playground will be able to use it. For that select `Dip` scheme and build for iPhone Simulator.
+
+You can find bunch of usage examples and usfull tips in a [wiki](../../wiki). 
+
+If your are using [VIPER](https://www.objc.io/issues/13-architecture/viper/) architecture - [here](https://github.com/ilyapuchka/VIPER-SWIFT) is VIPER demo app that uses Dip instead of manual dependency injection.
+
+There are also several blog posts that describe how to use Dip and some of its implementation details:
+
+- [IoC container in Swift](http://ilya.puchka.me/ioc-container-in-swift/)
+- [IoC container in Swift. Circular dependencies and auto-injection](http://ilya.puchka.me/ioc-container-in-swift-circular-dependencies-and-auto-injection/)
+- [Dependency injection with Dip](http://ilya.puchka.me/dependency-injecinjection-with-dip/)
+
+File an issue if you have any question. Pull requests are warmly welcome too.
+
+
+## Features
+
+- **[Scopes](../../wiki/scopes)**. Dip supports 5 different scopes (or life cycle strategies): _Unique_, _Shared_, _Singleton_, _EagerSingleton_, _WeakSingleton_;
+- **[Auto-wiring](../../wiki/auto-wiring)** & **[Auto-injection](../../wiki/auto-injection)**. Dip can infer your components' dependencies injected in constructor and automatically resolve them as well as dependencies injected with properties.
+- **[Resolving optionals](../../wiki/resolving-optionals)**. Dip is able to resolve constructor or property dependencies defined as optionals.
+- **[Type forwarding](../../wiki/type-forwarding)**. You can register the same factory to resolve different types implemeted by a single class.
+- **[Circular dependencies](../../wiki/circular-dependencies)**. Dip will be able to resolve circular dependencies if you will follow some simple rules;
+- **[Storyboards integration](../../wiki/storyboards-integration)**. You can easily use Dip along with storyboards and Xibs without ever referencing container in your view controller's code;
+- **[Named definitions](../../wiki/named-definitions)**. You can register different factories for the same protocol or type by registering them with [tags]();
+- **[Runtime arguments](../../wiki/runtime-arguments)**. You can register factories that accept up to 6 runtime arguments (and extend it if you need);
+- **[Easy configuration](../../wiki/containers-collaboration)** & **Code generation**. No complex containers hierarchy, no unneeded functionality. Tired of writing all registrations by hand? There is a [cool code generator](https://github.com/ilyapuchka/dipgen) that will create them for you. The only thing you need is to annotate your code with some comments.
+- **Weakly typed components**. Dip can resolve "weak" types when they are unknown at compile time.
+- **Thread safety**. Registering and resolving components is thread safe;
+- **Helpful error messages and configuration validation**. You can validate your container configuration. If something can not be resolved at runtime Dip throws an error that completely describes the issue;
+
+
 ## Installation

-Since version 5.0.0 Dip is built with Swift 3.0. For Swift 2.2-2.3 compatible version use "swift2.3" branch.
+You can install Dip using your favorite dependency manager:

-Dip is available through [CocoaPods](http://cocoapods.org). To install
-it, simply add the following line to your Podfile:
+<details>
+<summary>CocoaPods</summary>

-```ruby
-pod "Dip"
-```
+`pod "Dip"`

-If you use [Carthage](https://github.com/Carthage/Carthage) add this line to your Cartfile:
+</details>
+
+<details>
+<summary>Carthage</summary>

 ```
 github "AliSoftware/Dip"
 ```

-If you use [Swift Package Manager](https://swift.org/package-manager/) add Dip as dependency to you `Package.swift`:
+To build for Swift 2.3 run Carthage with `--toolchain com.apple.dt.toolchain.Swift_2_3` option.
+
+</details>
+
+<details>
+<summary>Swift Package Manager</summary>

 ```swift
-let package = Package(
-  name: "MyPackage",
-  dependencies: [
-    .Package(url: "https://github.com/AliSoftware/Dip.git", "5.0.0")
-  ]
-)
+.Package(url: "https://github.com/AliSoftware/Dip", majorVersion: 5, minor: 0)
 ```

+</details>
+
 ## Running tests

-On OSX you can run tests from Xcode. On Linux you need to have Swift Package Manager installed and use it to build and run tests:
-
-```
-cd Dip
-swift build && swift test
-```
-
-> Note: Swift Package Manager is destributed with Swift development snapshots only, so it builds packages using Swift 3. To build Dip you will need to build it with Swift 2.2, for that you need to set [`$SWIFT_EXEC`](https://github.com/apple/swift-package-manager#choosing-swift-version) environment variable.
+On OSX you can run tests from Xcode. On Linux you need to have Swift Package Manager installed and use it to build and run tests using this command: `swift build --clean && swift build && swift test`

 ## Credits

-This library has been created by [**Olivier Halligon**](olivier@halligon.net).  
-I'd also like to thank [**Ilya Puchka**](https://twitter.com/ilyapuchka) for his big contribution to it, as he added a lot of great features to it.
+This library has been created by [**Olivier Halligon**](olivier@halligon.net) and is maintained by [**Ilya Puchka**](https://twitter.com/ilyapuchka).

 **Dip** is available under the **MIT license**. See the `LICENSE` file for more info.

@@ -279,7 +279,7 @@
 			isa = PBXProject;
 			attributes = {
 				LastSwiftUpdateCheck = 0700;
-				LastUpgradeCheck = 0800;
+				LastUpgradeCheck = 1020;
 				ORGANIZATIONNAME = AliSoftware;
 				TargetAttributes = {
 					0990225E1BC123C000E76F43 = {
@@ -292,7 +292,7 @@
 			};
 			buildConfigurationList = 607FACCB1AFB9204008FA782 /* Build configuration list for PBXProject "DipSampleApp" */;
 			compatibilityVersion = "Xcode 3.2";
-			developmentRegion = English;
+			developmentRegion = en;
 			hasScannedForEncodings = 0;
 			knownRegions = (
 				en,
@@ -423,17 +423,28 @@
 			isa = XCBuildConfiguration;
 			buildSettings = {
 				ALWAYS_SEARCH_USER_PATHS = NO;
+				CLANG_ANALYZER_LOCALIZABILITY_NONLOCALIZED = YES;
 				CLANG_CXX_LANGUAGE_STANDARD = "gnu++0x";
 				CLANG_CXX_LIBRARY = "libc++";
 				CLANG_ENABLE_MODULES = YES;
 				CLANG_ENABLE_OBJC_ARC = YES;
+				CLANG_WARN_BLOCK_CAPTURE_AUTORELEASING = YES;
 				CLANG_WARN_BOOL_CONVERSION = YES;
+				CLANG_WARN_COMMA = YES;
 				CLANG_WARN_CONSTANT_CONVERSION = YES;
+				CLANG_WARN_DEPRECATED_OBJC_IMPLEMENTATIONS = YES;
 				CLANG_WARN_DIRECT_OBJC_ISA_USAGE = YES_ERROR;
 				CLANG_WARN_EMPTY_BODY = YES;
 				CLANG_WARN_ENUM_CONVERSION = YES;
+				CLANG_WARN_INFINITE_RECURSION = YES;
 				CLANG_WARN_INT_CONVERSION = YES;
+				CLANG_WARN_NON_LITERAL_NULL_CONVERSION = YES;
+				CLANG_WARN_OBJC_IMPLICIT_RETAIN_SELF = YES;
+				CLANG_WARN_OBJC_LITERAL_CONVERSION = YES;
 				CLANG_WARN_OBJC_ROOT_CLASS = YES_ERROR;
+				CLANG_WARN_RANGE_LOOP_ANALYSIS = YES;
+				CLANG_WARN_STRICT_PROTOTYPES = YES;
+				CLANG_WARN_SUSPICIOUS_MOVE = YES;
 				CLANG_WARN_UNREACHABLE_CODE = YES;
 				CLANG_WARN__DUPLICATE_METHOD_MATCH = YES;
 				"CODE_SIGN_IDENTITY[sdk=iphoneos*]" = "iPhone Developer";
@@ -461,7 +472,7 @@
 				ONLY_ACTIVE_ARCH = YES;
 				SDKROOT = iphoneos;
 				SWIFT_OPTIMIZATION_LEVEL = "-Onone";
-				SWIFT_VERSION = 3.0;
+				SWIFT_VERSION = 4.0;
 			};
 			name = Debug;
 		};
@@ -469,17 +480,28 @@
 			isa = XCBuildConfiguration;
 			buildSettings = {
 				ALWAYS_SEARCH_USER_PATHS = NO;
+				CLANG_ANALYZER_LOCALIZABILITY_NONLOCALIZED = YES;
 				CLANG_CXX_LANGUAGE_STANDARD = "gnu++0x";
 				CLANG_CXX_LIBRARY = "libc++";
 				CLANG_ENABLE_MODULES = YES;
 				CLANG_ENABLE_OBJC_ARC = YES;
+				CLANG_WARN_BLOCK_CAPTURE_AUTORELEASING = YES;
 				CLANG_WARN_BOOL_CONVERSION = YES;
+				CLANG_WARN_COMMA = YES;
 				CLANG_WARN_CONSTANT_CONVERSION = YES;
+				CLANG_WARN_DEPRECATED_OBJC_IMPLEMENTATIONS = YES;
 				CLANG_WARN_DIRECT_OBJC_ISA_USAGE = YES_ERROR;
 				CLANG_WARN_EMPTY_BODY = YES;
 				CLANG_WARN_ENUM_CONVERSION = YES;
+				CLANG_WARN_INFINITE_RECURSION = YES;
 				CLANG_WARN_INT_CONVERSION = YES;
+				CLANG_WARN_NON_LITERAL_NULL_CONVERSION = YES;
+				CLANG_WARN_OBJC_IMPLICIT_RETAIN_SELF = YES;
+				CLANG_WARN_OBJC_LITERAL_CONVERSION = YES;
 				CLANG_WARN_OBJC_ROOT_CLASS = YES_ERROR;
+				CLANG_WARN_RANGE_LOOP_ANALYSIS = YES;
+				CLANG_WARN_STRICT_PROTOTYPES = YES;
+				CLANG_WARN_SUSPICIOUS_MOVE = YES;
 				CLANG_WARN_UNREACHABLE_CODE = YES;
 				CLANG_WARN__DUPLICATE_METHOD_MATCH = YES;
 				"CODE_SIGN_IDENTITY[sdk=iphoneos*]" = "iPhone Developer";
@@ -498,7 +520,7 @@
 				IPHONEOS_DEPLOYMENT_TARGET = 8.3;
 				MTL_ENABLE_DEBUG_INFO = NO;
 				SDKROOT = iphoneos;
-				SWIFT_VERSION = 3.0;
+				SWIFT_VERSION = 4.0;
 				VALIDATE_PRODUCT = YES;
 			};
 			name = Release;
@@ -1,6 +1,6 @@
 <?xml version="1.0" encoding="UTF-8"?>
 <Scheme
-   LastUpgradeVersion = "0800"
+   LastUpgradeVersion = "1020"
   version = "1.3">
   <BuildAction
      parallelizeBuildables = "YES"
@@ -40,8 +40,8 @@
      buildConfiguration = "Debug"
      selectedDebuggerIdentifier = "Xcode.DebuggerFoundation.Debugger.LLDB"
      selectedLauncherIdentifier = "Xcode.DebuggerFoundation.Launcher.LLDB"
-      shouldUseLaunchSchemeArgsEnv = "YES"
-      codeCoverageEnabled = "YES">
+      codeCoverageEnabled = "YES"
+      shouldUseLaunchSchemeArgsEnv = "YES">
      <Testables>
         <TestableReference
            skipped = "NO">
@@ -1,5 +1,15 @@
 {
  "images" : [
+    {
+      "idiom" : "iphone",
+      "size" : "20x20",
+      "scale" : "2x"
+    },
+    {
+      "idiom" : "iphone",
+      "size" : "20x20",
+      "scale" : "3x"
+    },
    {
      "idiom" : "iphone",
      "size" : "29x29",
@@ -31,6 +41,16 @@
      "size" : "60x60",
      "scale" : "3x"
    },
+    {
+      "idiom" : "ipad",
+      "size" : "20x20",
+      "scale" : "1x"
+    },
+    {
+      "idiom" : "ipad",
+      "size" : "20x20",
+      "scale" : "2x"
+    },
    {
      "idiom" : "ipad",
      "size" : "29x29",
@@ -62,6 +82,16 @@
      "idiom" : "ipad",
      "filename" : "Icon-152.png",
      "scale" : "2x"
+    },
+    {
+      "idiom" : "ipad",
+      "size" : "83.5x83.5",
+      "scale" : "2x"
+    },
+    {
+      "idiom" : "ios-marketing",
+      "size" : "1024x1024",
+      "scale" : "1x"
    }
  ],
  "info" : {
@@ -1,45 +0,0 @@
-//
-//  BaseCell.swift
-//  Dip
-//
-//  Created by Olivier Halligon on 10/09/2015.
-//  Copyright © 2015 AliSoftware. All rights reserved.
-//
-
-import UIKit
-
-protocol BaseCell {
-    static var identifier: String { get }
-    static var nib: UINib? { get }
-    
-    static func register(_ tableView: UITableView)
-    static func dequeueFromTableView(_ tableView: UITableView, forIndexPath indexPath: IndexPath) -> Self
-}
-
-extension BaseCell where Self : UITableViewCell {
-    static var identifier: String {
-        return "\(Self.self)"
-    }
-    static var nib: UINib? { return nil }
-    
-    static func register(_ tableView: UITableView) {
-        if let cellNib = self.nib {
-            tableView.register(cellNib, forCellReuseIdentifier: identifier)
-        } else {
-            tableView.register(Self.self as AnyClass, forCellReuseIdentifier: identifier)
-        }
-    }
-    
-<<<<<<< HEAD
-    static func dequeueFromTableView(tableView: UITableView, forIndexPath indexPath: NSIndexPath) -> Self {
-=======
-    static func dequeueFromTableView(_ tableView: UITableView, forIndexPath indexPath: IndexPath) -> Self {
->>>>>>> feature/swift3
-        return tableView.dequeueReusableCell(withIdentifier: identifier, for: indexPath) as! Self
-    }
-}
-
-protocol FillableCell: BaseCell {
-    associatedtype ObjectType
-    func fillWithObject(object: ObjectType)
-}
@@ -1,48 +0,0 @@
-//
-//  UserCell.swift
-//  Dip
-//
-//  Created by Olivier Halligon on 10/09/2015.
-//  Copyright © 2015 AliSoftware. All rights reserved.
-//
-
-import UIKit
-
-final class PersonCell : UITableViewCell, FillableCell {
-    @IBOutlet weak var nameLabel: UILabel!
-    @IBOutlet weak var genderImageView: UIImageView!
-    @IBOutlet weak var heightLabel: UILabel!
-    @IBOutlet weak var massLabel: UILabel!
-    @IBOutlet weak var hairLabel: UILabel!
-    @IBOutlet weak var eyesLabel: UILabel!
-    
-<<<<<<< HEAD
-    let heightFormatter: NSLengthFormatter = {
-        let f = NSLengthFormatter()
-        f.isForPersonHeightUse = true
-        return f
-        }()
-    let massFormatter: NSMassFormatter = {
-        let f = NSMassFormatter()
-=======
-    let heightFormatter: LengthFormatter = {
-        let f = LengthFormatter()
-        f.isForPersonHeightUse = true
-        return f
-        }()
-    let massFormatter: MassFormatter = {
-        let f = MassFormatter()
->>>>>>> feature/swift3
-        f.isForPersonMassUse = true
-        return f
-    }()
-    
-    func fillWithObject(object person: Person) {
-        nameLabel.text = person.name
-        genderImageView.image = person.gender.flatMap { UIImage(named: $0.rawValue) }
-        heightLabel.text = heightFormatter.string(fromValue: Double(person.height), unit: .centimeter)
-        massLabel.text = massFormatter.string(fromValue: Double(person.mass), unit: .kilogram)
-        hairLabel.text = person.hairColor
-        eyesLabel.text = person.eyeColor
-    }
-}
@@ -9,7 +9,7 @@
 	<key>CFBundleIdentifier</key>
 	<string>$(PRODUCT_BUNDLE_IDENTIFIER)</string>
 	<key>CFBundleInfoDictionaryVersion</key>
-	<string>6.0</string>
+	<string>7.1.1</string>
 	<key>CFBundleName</key>
 	<string>$(PRODUCT_NAME)</string>
 	<key>CFBundlePackageType</key>
@@ -1,126 +0,0 @@
-//
-//  PlistPersonProvider.swift
-//  Dip
-//
-//  Created by Ilya Puchka on 12/09/2015.
-//  Copyright © 2015 AliSoftware. All rights reserved.
-//
-
-import Foundation
-
-///Provides some dummy Person entities
-struct DummyPilotProvider : PersonProviderAPI {
-    
-    func fetchIDs(completion: ([Int]) -> Void) {
-        completion(Array(0..<5))
-    }
-    
-<<<<<<< HEAD
-    func fetch(id: Int, completion: Person? -> Void) {
-=======
-    func fetch(id: Int, completion: (Person?) -> Void) {
->>>>>>> feature/swift3
-        completion(dummyPerson(idx: id))
-    }
-    
-    private func dummyPerson(idx: Int) -> Person {
-        let colors = ["blue", "brown", "yellow", "orange", "red", "dark"]
-        let genders: [Gender?] = [Gender.Male, Gender.Female, nil]
-        return Person(
-            name: "John Dummy Doe #\(idx)",
-            height: 150 + (idx*27%40),
-            mass: 50 + (idx*7%30),
-            hairColor: colors[idx*3%colors.count],
-            eyeColor: colors[idx*2%colors.count],
-            gender: genders[idx%3],
-            starshipIDs: [idx % 3, 2*idx % 4]
-        )
-    }
-}
-
-///Provides Person entities reading then from plist file
-class PlistPersonProvider : PersonProviderAPI {
-    let people: [Person]
-    
-    init(plist basename: String) {
-        guard
-<<<<<<< HEAD
-            let path = NSBundle.main().pathForResource(basename, ofType: "plist"),
-=======
-            let path = Bundle.main().pathForResource(basename, ofType: "plist"),
->>>>>>> feature/swift3
-            let list = NSArray(contentsOfFile: path),
-            peopleDict = list as? [[String:AnyObject]]
-            else {
-                fatalError("PLIST for \(basename) not found")
-        }
-        
-        self.people = peopleDict.map(PlistPersonProvider.personFromDict)
-    }
-    
-    func fetchIDs(completion: ([Int]) -> Void) {
-        completion(Array(0..<people.count))
-    }
-    
-    func fetch(id: Int, completion: (Person?) -> Void) {
-        guard id < people.count else {
-            completion(nil)
-            return
-        }
-        completion(people[id])
-    }
-    
-    private static func personFromDict(dict: [String:AnyObject]) -> Person {
-        guard
-            let name = dict["name"] as? String,
-            height = dict["height"] as? Int,
-            mass = dict["mass"] as? Int,
-            hairColor = dict["hairColor"] as? String,
-            eyeColor = dict["eyeColor"] as? String,
-            genderStr = dict["gender"] as? String,
-            starshipsIDs = dict["starships"] as? [Int]
-            else {
-                fatalError("Invalid Plist")
-        }
-        
-        return Person(
-            name: name,
-            height: height,
-            mass: mass,
-            hairColor: hairColor,
-            eyeColor: eyeColor,
-            gender: Gender(rawValue: genderStr),
-            starshipIDs: starshipsIDs
-        )
-    }
-}
-
-class FakePersonsProvider: PersonProviderAPI {
-    
-    let dummyProvider: PersonProviderAPI
-    var plistProvider: PersonProviderAPI!
-    
-    //In this class we use both constructor injection and property injection,
-    //nil is a valid local default
-    init(dummyProvider: PersonProviderAPI) {
-        self.dummyProvider = dummyProvider
-    }
-    
-<<<<<<< HEAD
-    func fetchIDs(completion: [Int] -> Void) {
-=======
-    func fetchIDs(completion: ([Int]) -> Void) {
->>>>>>> feature/swift3
-        dummyProvider.fetchIDs(completion: completion)
-    }
-    
-    func fetch(id: Int, completion: (Person?) -> Void) {
-        if let plistProvider = plistProvider where id == 0 {
-            plistProvider.fetch(id: id, completion: completion)
-        }
-        else {
-            dummyProvider.fetch(id: id, completion: completion)
-        }
-    }
-
-}
@@ -13,7 +13,7 @@ struct DummyStarshipProvider : StarshipProviderAPI {
    var pilotName: String
    
    func fetchIDs(completion: @escaping ([Int]) -> Void) {
-        let nbShips = pilotName.characters.count
+        let nbShips = pilotName.count
        completion(Array(0..<nbShips))
    }
    
@@ -1,92 +0,0 @@
-//
-//  FakeStarshipProvider.swift
-//  DipSampleApp
-//
-//  Created by Ilya Puchka on 20.01.16.
-//  Copyright © 2016 AliSoftware. All rights reserved.
-//
-
-import Foundation
-
-///Provides some dummy Starship entities
-struct DummyStarshipProvider : StarshipProviderAPI {
-    var pilotName: String
-    
-    func fetchIDs(completion: ([Int]) -> Void) {
-        let nbShips = pilotName.characters.count
-        completion(Array(0..<nbShips))
-    }
-    
-<<<<<<< HEAD
-    func fetch(id: Int, completion: Starship? -> Void) {
-=======
-    func fetch(id: Int, completion: (Starship?) -> Void) {
->>>>>>> feature/swift3
-        completion(dummyStarship(idx: id))
-    }
-    
-    private func dummyStarship(idx: Int) -> Starship {
-        return Starship(
-            name: "\(pilotName)'s awesome starship #\(idx)",
-            model: "\(pilotName)Ship",
-            manufacturer: "Dummy Industries",
-            crew: 1 + (idx%3),
-            passengers: 10 + (idx*7 % 40),
-            pilotIDs: [idx]
-        )
-    }
-}
-
-///Provides hardcoded Starship entities stored in memory
-class HardCodedStarshipProvider : StarshipProviderAPI {
-    
-    let starships = [
-        Starship(name: "First Ship", model: "AwesomeShip", manufacturer: "HardCoded Inc.", crew: 3, passengers: 20, pilotIDs: [1,2]),
-        Starship(name: "Second Ship", model: "AwesomeShip Express", manufacturer: "HardCoded Inc.", crew: 4, passengers: 10, pilotIDs: [1]),
-        Starship(name: "Third Ship", model: "AwesomeShip Cargo", manufacturer: "HardCoded Inc.", crew: 12, passengers: 150, pilotIDs: [2]),
-        ] + Array(4..<75).map { Starship(name: "Ship #\($0)", model: "AwesomeShip Fighter", manufacturer: "HardCoded Inc.", crew: 1, passengers: 2, pilotIDs: [1]) }
-    
-    func fetchIDs(completion: ([Int]) -> Void) {
-        completion(Array(0..<starships.count))
-    }
-    
-    func fetch(id: Int, completion: (Starship?) -> Void) {
-        guard id < starships.count else {
-            completion(nil)
-            return
-        }
-        completion(starships[id])
-    }
-}
-
-class FakeStarshipProvider: StarshipProviderAPI {
-    
-    let dummyProvider: StarshipProviderAPI
-    let hardCodedProvider: StarshipProviderAPI
-    
-    //Constructor injection again here
-    init(dummyProvider: StarshipProviderAPI, hardCodedProvider: StarshipProviderAPI) {
-        self.dummyProvider = dummyProvider
-        self.hardCodedProvider = hardCodedProvider
-    }
-    
-<<<<<<< HEAD
-    func fetchIDs(completion: [Int] -> Void) {
-=======
-    func fetchIDs(completion: ([Int]) -> Void) {
->>>>>>> feature/swift3
-        hardCodedProvider.fetchIDs(completion: completion)
-    }
-    
-    func fetch(id: Int, completion: (Starship?) -> Void) {
-        if id == 0 {
-            dummyProvider.fetch(id: id, completion: completion)
-        }
-        else {
-            hardCodedProvider.fetch(id: id, completion: completion)
-        }
-    }
-    
-}
-
-
@@ -1,40 +0,0 @@
-//
-//  NetworkLayer.swift
-//  Dip
-//
-//  Created by Olivier Halligon on 10/10/2015.
-//  Copyright © 2015 AliSoftware. All rights reserved.
-//
-
-import Foundation
-
-enum NetworkResponse {
-    case Success(Data, HTTPURLResponse)
-    case Error(NSError)
-    
-    func unwrap() throws -> (Data, HTTPURLResponse) {
-        switch self {
-        case Success(let data, let response):
-            return (data, response)
-        case Error(let error):
-            throw error
-        }
-    }
-    
-    func json<T>() throws -> T {
-        let (data, _) = try self.unwrap()
-<<<<<<< HEAD
-        let obj = try NSJSONSerialization.jsonObject(with: data, options: [])
-=======
-        let obj = try JSONSerialization.jsonObject(with: data, options: [])
->>>>>>> feature/swift3
-        guard let json = obj as? T else {
-            throw SWAPIError.InvalidJSON
-        }
-        return json
-    }
-}
-
-protocol NetworkLayer {
-    func request(path: String, completion: (NetworkResponse) -> Void)
-}
@@ -27,8 +27,8 @@ struct SWAPIPersonProvider : PersonProviderAPI {
                guard let results = dict["results"] as? [NSDictionary] else { throw SWAPIError.InvalidJSON }
                
                // Extract URLs (flatten to ignore invalid ones)
-                let urlStrings = results.flatMap({ $0["url"] as? String })
-                let ids = urlStrings.flatMap(idFromURLString)
+                let urlStrings = results.compactMap({ $0["url"] as? String })
+                let ids = urlStrings.compactMap(idFromURLString)
                
                completion(ids)
            }
@@ -61,7 +61,7 @@ struct SWAPIPersonProvider : PersonProviderAPI {
                    hairColor: hairColor,
                    eyeColor: eyeColor,
                    gender: Gender(rawValue: gender),
-                    starshipIDs: starshipURLStrings.flatMap(idFromURLString)
+                    starshipIDs: starshipURLStrings.compactMap(idFromURLString)
                )
                completion(person)
            }
@@ -1,81 +0,0 @@
-//
-//  SWAPIPersonProvider.swift
-//  Dip
-//
-//  Created by Olivier Halligon on 10/10/2015.
-//  Copyright © 2015 AliSoftware. All rights reserved.
-//
-
-import Foundation
-
-///Provides Person entitis fetching them with web service
-struct SWAPIPersonProvider : PersonProviderAPI {
-    let ws: NetworkLayer
-    
-    //Here we inject dependency using _constructor injection_ pattern.
-    //The alternative way is a _property injection_
-    //but it should be used only for optional dependencies
-    //where there is a good local default implementation
-    init(webService: NetworkLayer) {
-        self.ws = webService
-    }
-    
-<<<<<<< HEAD
-    func fetchIDs(completion: [Int] -> Void) {
-=======
-    func fetchIDs(completion: ([Int]) -> Void) {
->>>>>>> feature/swift3
-        ws.request(path: "people") { response in
-            do {
-                let dict = try response.json() as NSDictionary
-                guard let results = dict["results"] as? [NSDictionary] else { throw SWAPIError.InvalidJSON }
-                
-                // Extract URLs (flatten to ignore invalid ones)
-                let urlStrings = results.flatMap({ $0["url"] as? String })
-                let ids = urlStrings.flatMap(idFromURLString)
-                
-                completion(ids)
-            }
-            catch {
-                completion([])
-            }
-        }
-    }
-    
-<<<<<<< HEAD
-    func fetch(id: Int, completion: Person? -> Void) {
-=======
-    func fetch(id: Int, completion: (Person?) -> Void) {
->>>>>>> feature/swift3
-        ws.request(path: "people/\(id)") { response in
-            do {
-                let json = try response.json() as NSDictionary
-                guard
-                    let name = json["name"] as? String,
-                    let heightStr = json["height"] as? String, height = Int(heightStr),
-                    let massStr = json["mass"] as? String, mass = Int(massStr),
-                    let hairColor = json["hair_color"] as? String,
-                    let eyeColor = json["eye_color"] as? String,
-                    let gender = json["gender"] as? String,
-                    let starshipURLStrings = json["starships"] as? [String]
-                    else {
-                        throw SWAPIError.InvalidJSON
-                }
-                
-                let person = Person(
-                    name: name,
-                    height: height,
-                    mass: mass,
-                    hairColor: hairColor,
-                    eyeColor: eyeColor,
-                    gender: Gender(rawValue: gender),
-                    starshipIDs: starshipURLStrings.flatMap(idFromURLString)
-                )
-                completion(person)
-            }
-            catch {
-                completion(nil)
-            }
-        }
-    }
-}
@@ -27,8 +27,8 @@ struct SWAPIStarshipProvider : StarshipProviderAPI {
                guard let results = dict["results"] as? [NSDictionary] else { throw SWAPIError.InvalidJSON }
                
                // Extract URLs (flatten to ignore invalid ones)
-                let urlStrings = results.flatMap({ $0["url"] as? String })
-                let ids = urlStrings.flatMap(idFromURLString)
+                let urlStrings = results.compactMap({ $0["url"] as? String })
+                let ids = urlStrings.compactMap(idFromURLString)
                
                completion(ids)
            }
@@ -59,7 +59,7 @@ struct SWAPIStarshipProvider : StarshipProviderAPI {
                    manufacturer: manufacturer,
                    crew: crew,
                    passengers: passengers,
-                    pilotIDs: pilotIDStrings.flatMap(idFromURLString)
+                    pilotIDs: pilotIDStrings.compactMap(idFromURLString)
                )
                completion(ship)
            }
@@ -1,79 +0,0 @@
-//
-//  SWAPIStarshipProvider.swift
-//  Dip
-//
-//  Created by Olivier Halligon on 10/10/2015.
-//  Copyright © 2015 AliSoftware. All rights reserved.
-//
-
-import Foundation
-
-///Provides Starship entities fetching them using web service
-struct SWAPIStarshipProvider : StarshipProviderAPI {
-    let ws: NetworkLayer
-    
-    //Here we inject dependency using _constructor injection_ pattern.
-    //The alternative way is a _property injection_
-    //but it should be used only for optional dependencies 
-    //where there is a good local default implementation
-    init(webService: NetworkLayer) {
-        self.ws = webService
-    }
-    
-<<<<<<< HEAD
-    func fetchIDs(completion: [Int] -> Void) {
-=======
-    func fetchIDs(completion: ([Int]) -> Void) {
->>>>>>> feature/swift3
-        ws.request(path: "starships") { response in
-            do {
-                let dict = try response.json() as NSDictionary
-                guard let results = dict["results"] as? [NSDictionary] else { throw SWAPIError.InvalidJSON }
-                
-                // Extract URLs (flatten to ignore invalid ones)
-                let urlStrings = results.flatMap({ $0["url"] as? String })
-                let ids = urlStrings.flatMap(idFromURLString)
-                
-                completion(ids)
-            }
-            catch {
-                completion([])
-            }
-        }
-    }
-    
-<<<<<<< HEAD
-    func fetch(id: Int, completion: Starship? -> Void) {
-=======
-    func fetch(id: Int, completion: (Starship?) -> Void) {
->>>>>>> feature/swift3
-        ws.request(path: "starships/\(id)") { response in
-            do {
-                let json = try response.json() as NSDictionary
-                guard
-                    let name = json["name"] as? String,
-                    let model = json["model"] as? String,
-                    let manufacturer = json["manufacturer"] as? String,
-                    let crewStr = json["crew"] as? String, crew = Int(crewStr),
-                    let passengersStr = json["passengers"] as? String, passengers = Int(passengersStr),
-                    let pilotIDStrings = json["pilots"] as? [String]
-                    else {
-                        throw SWAPIError.InvalidJSON
-                }
-                
-                let ship = Starship(
-                    name: name,
-                    model: model,
-                    manufacturer: manufacturer,
-                    crew: crew,
-                    passengers: passengers,
-                    pilotIDs: pilotIDStrings.flatMap(idFromURLString)
-                )
-                completion(ship)
-            }
-            catch {
-                completion(nil)
-            }
-        }
-    }
-}
@@ -1,66 +0,0 @@
-//
-//  URLSessionNetworkLayer.swift
-//  Dip
-//
-//  Created by Olivier Halligon on 10/10/2015.
-//  Copyright © 2015 AliSoftware. All rights reserved.
-//
-
-import Foundation
-
-///NetworkLayer implementation on top of NSURLSession
-struct URLSessionNetworkLayer : NetworkLayer {
-    let baseURL: URL
-    let session: URLSession
-    let responseQueue: DispatchQueue
-    
-<<<<<<< HEAD
-    init?(baseURL: String, session: NSURLSession = NSURLSession.shared(), responseQueue: dispatch_queue_t = dispatch_get_main_queue()) {
-        guard let url = NSURL(string: baseURL) else { return nil }
-        self.init(baseURL: url, session: session)
-    }
-    
-    init(baseURL: NSURL, session: NSURLSession = .shared(), responseQueue: dispatch_queue_t = dispatch_get_main_queue()) {
-=======
-    init?(baseURL: String, session: URLSession = .shared(), responseQueue: DispatchQueue = DispatchQueue.main) {
-        guard let url = URL(string: baseURL) else { return nil }
-        self.init(baseURL: url, session: session)
-    }
-    
-    init(baseURL: URL, session: URLSession = .shared(), responseQueue: DispatchQueue = DispatchQueue.main) {
->>>>>>> feature/swift3
-        self.baseURL = baseURL
-        self.session = session
-        self.responseQueue = responseQueue
-    }
-    
-<<<<<<< HEAD
-    func request(path: String, completion: NetworkResponse -> Void) {
-        let url = self.baseURL.appendingPathComponent(path)
-        let task = session.dataTask(with: url) { data, response, error in
-            if let data = data, let response = response as? NSHTTPURLResponse {
-                dispatch_async(self.responseQueue) {
-=======
-    func request(path: String, completion: (NetworkResponse) -> Void) {
-        guard let url = try? self.baseURL.appendingPathComponent(path) else { return }
-        let task = session.dataTask(with: url) { data, response, error in
-            if let data = data, let response = response as? HTTPURLResponse {
-                self.responseQueue.async() {
->>>>>>> feature/swift3
-                    completion(NetworkResponse.Success(data, response))
-                }
-            }
-            else {
-                let err = error ?? NSError(domain: NSURLErrorDomain, code: NSURLError.unknown.rawValue, userInfo: nil)
-<<<<<<< HEAD
-                dispatch_async(self.responseQueue) {
-=======
-                self.responseQueue.async() {
->>>>>>> feature/swift3
-                    completion(NetworkResponse.Error(err))
-                }
-            }
-        }
-        task.resume()
-    }
-}
@@ -1,73 +0,0 @@
-//
-//  PersonListViewController.swift
-//  Dip
-//
-//  Created by Olivier Halligon on 09/10/2015.
-//  Copyright © 2015 AliSoftware. All rights reserved.
-//
-
-import UIKit
-
-class PersonListViewController: UITableViewController, FetchableTrait {
-    var objects: [Person]?
-    var batchRequestID = 0
-    
-    var personProvider: PersonProviderAPI!
-    var starshipProvider: StarshipProviderAPI!
-<<<<<<< HEAD
-        
-    func fetchIDs(completion: [Int] -> Void) {
-        return personProvider.fetchIDs(completion: completion)
-    }
-    
-    func fetchOne(id personID: Int, completion: Person? -> Void) {
-=======
-    
-    func fetchIDs(completion: ([Int]) -> Void) {
-        return personProvider.fetchIDs(completion: completion)
-    }
-    
-    func fetchOne(id personID: Int, completion: (Person?) -> Void) {
->>>>>>> feature/swift3
-        return personProvider.fetch(id: personID, completion: completion)
-    }
-    
-    var fetchProgress: (current: Int, total: Int?) = (0, nil) {
-        didSet {
-            displayProgressInNavBar(navigationItem: self.navigationItem)
-        }
-    }
-
-    override func prepare(for segue: UIStoryboardSegue, sender: AnyObject?) {
-        guard
-            let id = segue.identifier, segueID = UIStoryboard.Segue.Main(rawValue: id)
-            where segueID == .StarshipsSegue,
-            let indexPath = self.tableView.indexPathForSelectedRow,
-            let destVC = segue.destinationViewController as? StarshipListViewController,
-            let person = self.objects?[indexPath.row]
-            else {
-                fatalError()
-        }
-        destVC.starshipProvider = starshipProvider
-        destVC.loadObjects(objectIDs: person.starshipIDs)
-    }
-}
-
-extension PersonListViewController {
-    override func tableView(_ tableView: UITableView, numberOfRowsInSection section: Int) -> Int {
-        return objects?.count ?? 0
-    }
-    
-<<<<<<< HEAD
-    override func tableView(_ tableView: UITableView, cellForRowAt indexPath: NSIndexPath) -> UITableViewCell {
-        guard let object = self.objects?[indexPath.row] else { fatalError() }
-        let cell = PersonCell.dequeueFromTableView(tableView: tableView, forIndexPath: indexPath)
-=======
-    override func tableView(_ tableView: UITableView, cellForRowAt indexPath: IndexPath) -> UITableViewCell {
-        guard let object = self.objects?[indexPath.row] else { fatalError() }
-        let cell = PersonCell.dequeueFromTableView(tableView, forIndexPath: indexPath)
->>>>>>> feature/swift3
-        cell.fillWithObject(object: object)
-        return cell
-    }
-}
@@ -1,72 +0,0 @@
-//
-//  StarshipListViewController.swift
-//  Dip
-//
-//  Created by Olivier Halligon on 09/10/2015.
-//  Copyright © 2015 AliSoftware. All rights reserved.
-//
-
-import UIKit
-import Dip
-
-class StarshipListViewController : UITableViewController, FetchableTrait {
-    var objects: [Starship]?
-    var batchRequestID = 0
-    
-    var starshipProvider: StarshipProviderAPI!
-    var personProvider: PersonProviderAPI!
-    
-<<<<<<< HEAD
-    func fetchIDs(completion: [Int] -> Void) {
-        starshipProvider.fetchIDs(completion: completion)
-    }
-    func fetchOne(id shipID:Int, completion: Starship? -> Void) {
-=======
-    func fetchIDs(completion: ([Int]) -> Void) {
-        starshipProvider.fetchIDs(completion: completion)
-    }
-    func fetchOne(id shipID:Int, completion: (Starship?) -> Void) {
->>>>>>> feature/swift3
-        starshipProvider.fetch(id: shipID, completion: completion)
-    }
-    
-    var fetchProgress: (current: Int, total: Int?) = (0, nil) {
-        didSet {
-            displayProgressInNavBar(navigationItem: self.navigationItem)
-        }
-    }
-    
-    override func prepare(for segue: UIStoryboardSegue, sender: AnyObject?) {
-        guard
-            let id = segue.identifier, segueID = UIStoryboard.Segue.Main(rawValue: id)
-            where segueID == .PilotsSegue,
-            let indexPath = self.tableView.indexPathForSelectedRow,
-            let destVC = segue.destinationViewController as? PersonListViewController,
-            let starship = self.objects?[indexPath.row]
-            else {
-                fatalError()
-        }
-        
-        destVC.personProvider = personProvider
-        destVC.loadObjects(objectIDs: starship.pilotIDs)
-    }
-}
-
-extension StarshipListViewController {
-    override func tableView(_ tableView: UITableView, numberOfRowsInSection section: Int) -> Int {
-        return objects?.count ?? 0
-    }
-    
-<<<<<<< HEAD
-    override func tableView(_ tableView: UITableView, cellForRowAt indexPath: NSIndexPath) -> UITableViewCell {
-        guard let object = self.objects?[indexPath.row] else { fatalError() }
-        let cell = StarshipCell.dequeueFromTableView(tableView: tableView, forIndexPath: indexPath)
-=======
-    override func tableView(_ tableView: UITableView, cellForRowAt indexPath: IndexPath) -> UITableViewCell {
-        guard let object = self.objects?[indexPath.row] else { fatalError() }
-        let cell = StarshipCell.dequeueFromTableView(tableView, forIndexPath: indexPath)
->>>>>>> feature/swift3
-        cell.fillWithObject(object: object)
-        return cell
-    }
-}
@@ -9,7 +9,7 @@
 	<key>CFBundleIdentifier</key>
 	<string>$(PRODUCT_BUNDLE_IDENTIFIER)</string>
 	<key>CFBundleInfoDictionaryVersion</key>
-	<string>6.0</string>
+	<string>7.1.1</string>
 	<key>CFBundleName</key>
 	<string>$(PRODUCT_NAME)</string>
 	<key>CFBundlePackageType</key>
@@ -1,52 +0,0 @@
-//
-//  NetworkMock.swift
-//  Dip
-//
-//  Created by Olivier Halligon on 11/10/2015.
-//  Copyright © 2015 AliSoftware. All rights reserved.
-//
-
-import Foundation
-import Dip
-
-var wsDependencies = DependencyContainer()
-
-// MARK: - Mock object used for tests
-
-struct NetworkMock : NetworkLayer {
-    let fakeData: Data?
-    
-    init(json: AnyObject) {
-        do {
-<<<<<<< HEAD
-            fakeData = try NSJSONSerialization.data(withJSONObject: json, options: [])
-=======
-            fakeData = try JSONSerialization.data(withJSONObject: json, options: [])
->>>>>>> feature/swift3
-        } catch {
-            fakeData = nil
-        }
-    }
-    
-<<<<<<< HEAD
-    func request(path: String, completion: NetworkResponse -> Void) {
-        let fakeURL = NSURL(string: "stub://")!.appendingPathComponent(path)
-        if let data = fakeData {
-            let response = NSHTTPURLResponse(url: fakeURL, statusCode: 200, httpVersion: "1.1", headerFields:nil)!
-            completion(.Success(data, response))
-        } else {
-            let response = NSHTTPURLResponse(url: fakeURL, statusCode: 204, httpVersion: "1.1", headerFields:nil)!
-            completion(.Success(NSData(), response))
-=======
-    func request(path: String, completion: (NetworkResponse) -> Void) {
-        let fakeURL = try! URL(string: "stub://")!.appendingPathComponent(path)
-        if let data = fakeData {
-            let response = HTTPURLResponse(url: fakeURL, statusCode: 200, httpVersion: "1.1", headerFields:nil)!
-            completion(.Success(data, response))
-        } else {
-            let response = HTTPURLResponse(url: fakeURL, statusCode: 204, httpVersion: "1.1", headerFields:nil)!
-            completion(.Success(Data(), response))
->>>>>>> feature/swift3
-        }
-    }
-}
@@ -27,7 +27,7 @@ extension DependencyContainer {
  /**
   Resolves properties of passed object wrapped with `Injected<T>` or `InjectedWeak<T>`
   */
-  func autoInjectProperties(_ instance: Any) throws {
+  func autoInjectProperties(in instance: Any) throws {
    let mirror = Mirror(reflecting: instance)
    
    //mirror only contains class own properties
@@ -43,11 +43,14 @@ extension DependencyContainer {
  }
  
  private func resolveChild(child: Mirror.Child) throws {
+    //HOTFIX for https://bugs.swift.org/browse/SR-2282
+    guard !String(describing: type(of: child.value)).has(prefix: "ImplicitlyUnwrappedOptional") else { return }
    guard let injectedPropertyBox = child.value as? AutoInjectedPropertyBox else { return }
    
-    let contextKey = DefinitionKey(type: type(of: injectedPropertyBox).wrappedType, typeOfArguments: Void.self, tag: context.tag)
-    try inContext(contextKey, injectedInType: context?.resolvingType, injectedInProperty: child.label, logErrors: false) {
-        try injectedPropertyBox.resolve(self)
+    let wrappedType = type(of: injectedPropertyBox).wrappedType
+    let contextKey = DefinitionKey(type: wrappedType, typeOfArguments: Void.self, tag: context.tag)
+    try inContext(key:contextKey, injectedInType: context?.resolvingType, injectedInProperty: child.label, logErrors: false) {
+      try injectedPropertyBox.resolve(self)
    }
  }
  
@@ -75,7 +78,7 @@ extension DependencyContainer {
 ```

 */
-public protocol AutoInjectedPropertyBox: class {
+public protocol AutoInjectedPropertyBox {
  ///The type of wrapped property.
  static var wrappedType: Any.Type { get }
  
@@ -90,77 +93,139 @@ public protocol AutoInjectedPropertyBox: class {
  func resolve(_ container: DependencyContainer) throws
 }

+#if swift(>=5.1)
 /**
 Use this wrapper to identify _strong_ properties of the instance that should be
 auto-injected by `DependencyContainer`. Type T can be any type.
-
- - warning: Do not define this property as optional or container will not be able to inject it.
-            Instead define it with initial value of `Injected<T>()`.
-
+ 
 **Example**:
+ 
+ ```swift
+ class ClientImp: Client {
+   @Injected var service: Service?
+ }
+ ```
+ 
+ - seealso: `InjectedWeak`
+ 
+ */
+@propertyWrapper
+public struct Injected<T>: _InjectedPropertyBox, AutoInjectedPropertyBox {
+  let valueBox: NullableBox<T> = NullableBox(nil)
+  
+  ///Wrapped value.
+  public var wrappedValue: T? {
+    get {
+      return valueBox.unboxed
+    }
+    set {
+      guard (required && newValue != nil) || !required else {
+        fatalError("Can not set required property to nil.")
+      }
+      valueBox.unboxed = newValue
+    }
+  }
+  

+  let required: Bool
+  let didInject: (T) -> ()
+  let tag: DependencyContainer.Tag?
+  let overrideTag: Bool
+
+  public init(wrappedValue initialValue: T?) {
+    self.init()
+  }
+}
+#else
+/**
+ Use this wrapper to identify _strong_ properties of the instance that should be
+ auto-injected by `DependencyContainer`. Type T can be any type.
+ 
+ - warning: Do not define this property as optional or container will not be able to inject it.
+ Instead define it with initial value of `Injected<T>()`.
+ 
+ **Example**:
+ 
 ```swift
 class ClientImp: Client {
   var service = Injected<Service>()
 }
 ```
+ 
 - seealso: `InjectedWeak`
-
-*/
-public final class Injected<T>: _InjectedPropertyBox<T>, AutoInjectedPropertyBox {
+ 
+ */
+public struct Injected<T>: _InjectedPropertyBox, AutoInjectedPropertyBox {
+  let valueBox: NullableBox<T> = NullableBox(nil)
  
-  ///The type of wrapped property.
-  public static var wrappedType: Any.Type {
-    return T.self
-  }
-
  ///Wrapped value.
-  public private(set) var value: T? {
-    didSet {
-      if let value = value { didInject(value) }
-    }
+  public var value: T? {
+    return valueBox.unboxed
  }

-  /**
-   Creates a new wrapper for auto-injected property.
-   
-   - parameters:
-      - required: Defines if the property is required or not. 
-                  If container fails to inject required property it will als fail to resolve 
-                  the instance that defines that property. Default is `true`.
-      - tag: An optional tag to use to lookup definitions when injecting this property. Default is `nil`.
-      - didInject: block that will be called when concrete instance is injected in this property. 
-                   Similar to `didSet` property observer. Default value does nothing.
-  */
-  public convenience init(required: Bool = true, didInject: @escaping (T) -> () = { _ in }) {
-    self.init(value: nil, required: required, tag: nil, overrideTag: false, didInject: didInject)
-  }
-
-  public convenience init(required: Bool = true, tag: DependencyTagConvertible?, didInject: @escaping (T) -> () = { _ in }) {
-    self.init(value: nil, required: required, tag: tag, overrideTag: true, didInject: didInject)
-  }
-
-  private init(value: T?, required: Bool = true, tag: DependencyTagConvertible?, overrideTag: Bool, didInject: @escaping (T) -> ()) {
-    self.value = value
-    super.init(required: required, tag: tag, overrideTag: overrideTag, didInject: didInject)
-  }
-
-  public func resolve(_ container: DependencyContainer) throws {
-    let resolved: T? = try super.resolve(container)
-    value = resolved
-  }
+  let required: Bool
+  let didInject: (T) -> ()
+  let tag: DependencyContainer.Tag?
+  let overrideTag: Bool
  
  /// Returns a new wrapper with provided value.
-  public func setValue(_ value: T?) -> Injected {
+  func setValue(_ value: T?) -> Injected {
    guard (required && value != nil) || !required else {
      fatalError("Can not set required property to nil.")
    }
    
    return Injected(value: value, required: required, tag: tag, overrideTag: overrideTag, didInject: didInject)
  }
+}
+#endif
+
+public extension Injected {
+  ///The type of wrapped property.
+  static var wrappedType: Any.Type {
+    return T.self
+  }
  
+  init(value: T?, required: Bool = true, tag: DependencyTagConvertible?, overrideTag: Bool, didInject: @escaping (T) -> ()) {
+    self.init(required: required, tag: tag, overrideTag: overrideTag, didInject: didInject)
+    self.valueBox.unboxed = value
+  }
+  
+  init(required: Bool = true, tag: DependencyTagConvertible?, overrideTag: Bool, didInject: @escaping (T) -> () = { _ in }) {
+    self.required = required
+    self.tag = tag?.dependencyTag
+    self.overrideTag = overrideTag
+    self.didInject = didInject
+  }
+
+  /**
+   Creates a new wrapper for auto-injected property.
+   
+   - parameters:
+      - required: Defines if the property is required or not.
+                  If container fails to inject required property it will als fail to resolve
+                  the instance that defines that property. Default is `true`.
+      - tag: An optional tag to use to lookup definitions when injecting this property. Default is `nil`.
+      - didInject: Block that will be called when concrete instance is injected in this property.
+                   Similar to `didSet` property observer. Default value does nothing.
+   */
+  init(required: Bool = true, didInject: @escaping (T) -> () = { _ in }) {
+    self.init(value: nil, required: required, tag: nil, overrideTag: false, didInject: didInject)
+  }
+  
+  init(required: Bool = true, tag: DependencyTagConvertible?, didInject: @escaping (T) -> () = { _ in }) {
+    self.init(value: nil, required: required, tag: tag, overrideTag: true, didInject: didInject)
+  }
+
+  func resolve(_ container: DependencyContainer) throws {
+    let resolved: T? = try self.resolve(with: container, tag: tag, overrideTag: overrideTag, required: required)
+    valueBox.unboxed = resolved
+    if let resolved = resolved  {
+      didInject(resolved)
+    }
+  }
 }

+#if swift(>=5.1)
 /**
 Use this wrapper to identify _weak_ properties of the instance that should be
 auto-injected by `DependencyContainer`. Type T should be a **class** type.
@@ -182,35 +247,122 @@ public final class Injected<T>: _InjectedPropertyBox<T>, AutoInjectedPropertyBox
 
 ```swift
 class ServiceImp: Service {
-   var client = InjectedWeak<Client>()
+   @InjectedWeak var client: Client?
 }
-
 ```
 
 - seealso: `Injected`
 
 */
-public final class InjectedWeak<T>: _InjectedPropertyBox<T>, AutoInjectedPropertyBox {
+@propertyWrapper
+public struct InjectedWeak<T>: _InjectedPropertyBox, AutoInjectedPropertyBox {

  //Only classes (means AnyObject) can be used as `weak` properties
  //but we can not make <T: AnyObject> because that will prevent using protocol as generic type
  //so we just rely on user reading documentation and passing AnyObject in runtime
  //also we will throw fatal error if type can not be casted to AnyObject during resolution.
-
-  ///The type of wrapped property.
-  public static var wrappedType: Any.Type {
-    return T.self
-  }
-
-  private var valueBox: WeakBox<T>? = nil {
-    didSet {
-      if let value = value { didInject(value) }
+  
+  let valueBox: WeakBox<T> = WeakBox(nil)
+  
+  ///Wrapped value.
+  public var wrappedValue: T? {
+    get {
+      return valueBox.value
+    }
+    set {
+      guard (required && newValue != nil) || !required else {
+        fatalError("Can not set required property to nil.")
+      }
+      
+      valueBox.unboxed = newValue as AnyObject
    }
  }
  
+  let required: Bool
+  let didInject: (T) -> ()
+  let tag: DependencyContainer.Tag?
+  let overrideTag: Bool
+  
+  public init(wrappedValue initialValue: T?) {
+    self.init()
+  }
+}
+#else
+/**
+ Use this wrapper to identify _weak_ properties of the instance that should be
+ auto-injected by `DependencyContainer`. Type T should be a **class** type.
+ Otherwise it will cause runtime exception when container will try to resolve the property.
+ Use this wrapper to define one of two circular dependencies to avoid retain cycle.
+ 
+ - note: The only difference between `InjectedWeak` and `Injected` is that `InjectedWeak` uses
+ _weak_ reference to store underlying value, when `Injected` uses _strong_ reference.
+ For that reason if you resolve instance that has a _weak_ auto-injected property this property
+ will be released when `resolve` will complete.
+ 
+ Use `InjectedWeak<T>` to define one of two circular dependecies if another dependency is defined as `Injected<U>`.
+ This will prevent a retain cycle between resolved instances.
+ 
+ - warning: Do not define this property as optional or container will not be able to inject it.
+ Instead define it with initial value of `InjectedWeak<T>()`.
+ 
+ **Example**:
+ 
+ ```swift
+ class ServiceImp: Service {
+   var client = InjectedWeak<Client>()
+ }
+ ```
+ 
+ - seealso: `Injected`
+ 
+ */
+public struct InjectedWeak<T>: _InjectedPropertyBox, AutoInjectedPropertyBox {
+  
+  //Only classes (means AnyObject) can be used as `weak` properties
+  //but we can not make <T: AnyObject> because that will prevent using protocol as generic type
+  //so we just rely on user reading documentation and passing AnyObject in runtime
+  //also we will throw fatal error if type can not be casted to AnyObject during resolution.
+  
+  let valueBox: WeakBox<T> = WeakBox(nil)
+  
  ///Wrapped value.
  public var value: T? {
-    return valueBox?.value
+    return valueBox.value
+  }
+
+  let required: Bool
+  let didInject: (T) -> ()
+  let tag: DependencyContainer.Tag?
+  let overrideTag: Bool
+  
+  
+  /// Returns a new wrapper with provided value.
+  func setValue(_ value: T?) -> InjectedWeak {
+    guard (required && value != nil) || !required else {
+      fatalError("Can not set required property to nil.")
+    }
+    
+    return InjectedWeak(value: value, required: required, tag: tag, overrideTag: overrideTag, didInject: didInject)
+  }
+}
+#endif
+
+public extension InjectedWeak {
+  ///The type of wrapped property.
+  static var wrappedType: Any.Type {
+    return T.self
+  }
+  
+  init(value: T?, required: Bool = true, tag: DependencyTagConvertible?, overrideTag: Bool, didInject: @escaping (T) -> ()) {
+    self.init(required: required, tag: tag, overrideTag: overrideTag, didInject: didInject)
+    self.valueBox.unboxed = value as AnyObject
+  }
+  
+  init(required: Bool = true, tag: DependencyTagConvertible?, overrideTag: Bool, didInject: @escaping (T) -> () = { _ in }) {
+    self.required = required
+    self.tag = tag?.dependencyTag
+    self.overrideTag = overrideTag
+    self.didInject = didInject
  }

  /**
@@ -221,78 +373,52 @@ public final class InjectedWeak<T>: _InjectedPropertyBox<T>, AutoInjectedPropert
                  If container fails to inject required property it will als fail to resolve
                  the instance that defines that property. Default is `true`.
      - tag: An optional tag to use to lookup definitions when injecting this property. Default is `nil`.
-      - didInject: block that will be called when concrete instance is injected in this property.
+      - didInject: Block that will be called when concrete instance is injected in this property.
                   Similar to `didSet` property observer. Default value does nothing.
   */
-  public convenience init(required: Bool = true, didInject: @escaping (T) -> () = { _ in }) {
+  init(required: Bool = true, didInject: @escaping (T) -> () = { _ in }) {
    self.init(value: nil, required: required, tag: nil, overrideTag: false, didInject: didInject)
  }
-
-  public convenience init(required: Bool = true, tag: DependencyTagConvertible?, didInject: @escaping (T) -> () = { _ in }) {
+  
+  init(required: Bool = true, tag: DependencyTagConvertible?, didInject: @escaping (T) -> () = { _ in }) {
    self.init(value: nil, required: required, tag: tag, overrideTag: true, didInject: didInject)
  }
-
-  private init(value: T?, required: Bool = true, tag: DependencyTagConvertible?, overrideTag: Bool, didInject: @escaping (T) -> ()) {
-    self.valueBox = value.map(WeakBox.init)
-    super.init(required: required, tag: tag, overrideTag: overrideTag, didInject: didInject)
-  }
-
-  public func resolve(_ container: DependencyContainer) throws {
-    let resolved: T? = try super.resolve(container)
-    valueBox = resolved.map(WeakBox.init)
-  }
  
-  /// Returns a new wrapper with provided value.
-  public func setValue(_ value: T?) -> InjectedWeak {
-    guard (required && value != nil) || !required else {
-      fatalError("Can not set required property to nil.")
+  func resolve(_ container: DependencyContainer) throws {
+    let resolved: T? = try self.resolve(with: container, tag: tag, overrideTag: overrideTag, required: required)
+    valueBox.unboxed = resolved as AnyObject
+    if let resolved = resolved  {
+      didInject(resolved)
    }
-
-    return InjectedWeak(value: value, required: required, tag: tag, overrideTag: overrideTag, didInject: didInject)
  }
-
 }

-private class _InjectedPropertyBox<T> {
+protocol _InjectedPropertyBox {}

-  let required: Bool
-  let didInject: (T) -> ()
-  let tag: DependencyContainer.Tag?
-  let overrideTag: Bool
-
-  init(required: Bool = true, tag: DependencyTagConvertible?, overrideTag: Bool, didInject: @escaping (T) -> () = { _ in }) {
-    self.required = required
-    self.tag = tag?.dependencyTag
-    self.overrideTag = overrideTag
-    self.didInject = didInject
-  }
-
-  fileprivate func resolve(_ container: DependencyContainer) throws -> T? {
-    let tag = overrideTag ? self.tag : container.context.tag
+extension _InjectedPropertyBox {
+  func resolve<T>(with container: DependencyContainer, tag: DependencyContainer.Tag?, overrideTag: Bool, required: Bool) throws -> T? {
+    let tag = overrideTag ? tag : container.context.tag
    do {
-      container.context.key = container.context.key.tagged(tag)
+      container.context.key = container.context.key.tagged(with: tag)
      let key = DefinitionKey(type: T.self, typeOfArguments: Void.self, tag: tag?.dependencyTag)
-      return try resolve(container, key: key, builder: { factory in try factory() }) as? T
+      return try resolve(with: container, key: key, builder: { (factory: (Any) throws -> Any) in try factory(()) }) as? T
    }
    catch {
-      let error = DipError.autoInjectionFailed(label: container.context.injectedInProperty, type: container.context.resolvingType, underlyingError: error)
-      
+        let error = DipError.autoInjectionFailed(label: container.context.injectedInProperty, type: container.context.resolvingType, underlyingError: error)
      if required {
        throw error
      }
      else {
-        log(.Errors, error)
+        log(level: .Errors, error)
        return nil
      }
    }
  }
  
-  private func resolve<U>(_ container: DependencyContainer, key: DefinitionKey, builder: ((U) throws -> Any) throws -> Any) throws -> Any {
-    return try container.resolve(key: key, builder: { definition throws -> Any in
+  func resolve<U>(with container: DependencyContainer, key: DefinitionKey, builder: ((U) throws -> Any) throws -> Any) throws -> Any {
+    return try container._resolve(key: key, builder: { definition throws -> Any in
      try builder(definition.weakFactory)
    })
  }
  
 }
-
-
@@ -30,7 +30,8 @@ protocol AutoWiringDefinition: DefinitionType {
 extension DependencyContainer {
  
  /// Tries to resolve instance using auto-wiring
-  func autowire<T>(_ key: DefinitionKey) throws -> T {
+  func autowire<T>(key aKey: DefinitionKey) throws -> T {
+    let key = aKey
    guard key.typeOfArguments == Void.self else {
      throw DipError.definitionNotFound(key: key)
    }
@@ -38,8 +39,8 @@ extension DependencyContainer {
    let autoWiringKey = try autoWiringDefinition(byKey: key).key
    
    do {
-      let key = autoWiringKey.tagged(key.tag ?? context.tag)
-      return try resolve(key: key) { definition in
+      let key = autoWiringKey.tagged(with: key.tag ?? context.tag)
+      return try _resolve(key: key) { definition in
        try definition.autoWiringFactory!(self, key.tag) as! T
      }
    }
@@ -49,19 +50,30 @@ extension DependencyContainer {
  }

  private func autoWiringDefinition(byKey key: DefinitionKey) throws -> KeyDefinitionPair {
+    do {
+      return try autoWiringDefinition(byKey: key, strictByTag: true)
+    } catch  {
+      if key.tag != nil {
+        return try autoWiringDefinition(byKey: key, strictByTag: false)
+      } else {
+        throw error
+      }
+    }
+  }
+  
+  private func autoWiringDefinition(byKey key: DefinitionKey, strictByTag: Bool) throws -> KeyDefinitionPair {
    var definitions = self.definitions.map({ (key: $0.0, definition: $0.1) })
    
-    definitions = filter(definitions, byKey: key)
+    definitions = filter(definitions: definitions, byKey: key, strictByTag: strictByTag)
    definitions = definitions.sorted(by: { $0.definition.numberOfArguments > $1.definition.numberOfArguments })
-
+    
    guard definitions.count > 0 && definitions[0].definition.numberOfArguments > 0 else {
      throw DipError.definitionNotFound(key: key)
    }
    
    let maximumNumberOfArguments = definitions.first?.definition.numberOfArguments
    definitions = definitions.filter({ $0.definition.numberOfArguments == maximumNumberOfArguments })
-    definitions = order(definitions, byTag: key.tag)
-
+    
    //when there are several definitions with the same number of arguments but different arguments types
    if definitions.count > 1 && definitions[0].key.typeOfArguments != definitions[1].key.typeOfArguments {
      let error = DipError.ambiguousDefinitions(type: key.type, definitions: definitions.map({ $0.definition }))
@@ -0,0 +1,5 @@
+extension String {
+  func has(prefix aPrefix: String) -> Bool {
+    return hasPrefix(aPrefix)
+  }
+}
@@ -0,0 +1,120 @@
+//
+// Dip
+//
+// Copyright (c) 2015 Olivier Halligon <olivier@halligon.net>
+// 
+// Permission is hereby granted, free of charge, to any person obtaining a copy
+// of this software and associated documentation files (the "Software"), to deal
+// in the Software without restriction, including without limitation the rights
+// to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+// copies of the Software, and to permit persons to whom the Software is
+// furnished to do so, subject to the following conditions:
+// 
+// The above copyright notice and this permission notice shall be included in
+// all copies or substantial portions of the Software.
+// 
+// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+// OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+// THE SOFTWARE.
+//
+
+///Component scope defines a strategy used by the `DependencyContainer` to manage resolved instances life cycle.
+public enum ComponentScope {
+  
+  /**
+   A new instance will be created every time it's resolved.
+   This is a default strategy. Use this strategy when you don't want instances to be shared
+   between different consumers (i.e. if it is not thread safe).
+   
+   **Example**:
+   
+   ```
+   container.register { ServiceImp() as Service }
+   container.register {
+     ServiceConsumerImp(
+       service1: try container.resolve() as Service
+       service2: try container.resolve() as Service
+     ) as ServiceConsumer
+   }
+   let consumer = container.resolve() as ServiceConsumer
+   consumer.service1 !== consumer.service2 //true
+   
+   ```
+   */
+  case unique
+  
+  /**
+   Instance resolved with the same definition will be reused until topmost `resolve(tag:)` method returns.
+   When you resolve the same object graph again the container will create new instances.
+   Use this strategy if you want different object in objects graph to share the same instance.
+   
+   - warning: Make sure this component is thread safe or accessed always from the same thread.
+   
+   **Example**:
+   
+   ```
+   container.register { ServiceImp() as Service }
+   container.register {
+     ServiceConsumerImp(
+       service1: try container.resolve() as Service
+       service2: try container.resolve() as Service
+     ) as ServiceConsumer
+   }
+   let consumer1 = container.resolve() as ServiceConsumer
+   let consumer2 = container.resolve() as ServiceConsumer
+   consumer1.service1 === consumer1.service2 //true
+   consumer2.service1 === consumer2.service2 //true
+   consumer1.service1 !== consumer2.service1 //true
+   ```
+   */
+  case shared
+  
+  /**
+   Resolved instance will be retained by the container and always reused.
+   Do not mix this life cycle with _singleton pattern_.
+   Instance will be not shared between different containers unless they collaborate.
+   
+   - warning: Make sure this component is thread safe or accessed always from the same thread.
+   
+   - note: When you override or remove definition from the container an instance
+   that was resolved with this definition will be released. When you reset
+   the container it will release all singleton instances.
+   
+   **Example**:
+   
+   ```
+   container.register(.singleton) { ServiceImp() as Service }
+   container.register {
+     ServiceConsumerImp(
+       service1: try container.resolve() as Service
+       service2: try container.resolve() as Service
+     ) as ServiceConsumer
+   }
+   let consumer1 = container.resolve() as ServiceConsumer
+   let consumer2 = container.resolve() as ServiceConsumer
+   consumer1.service1 === consumer1.service2 //true
+   consumer2.service1 === consumer2.service2 //true
+   consumer1.service1 === consumer2.service1 //true
+   ```
+   */
+  case singleton
+  
+  /**
+   The same scope as a `Singleton`, but instance will be created when container is bootstrapped.
+   
+   - seealso: `bootstrap()`
+   */
+  case eagerSingleton
+  
+  /**
+   The same scope as a `Singleton`, but container stores week reference to the resolved instance.
+   While a strong reference to the resolved instance exists resolve will return the same instance.
+   After the resolved instance is deallocated next resolve will produce a new instance.
+   */
+  case weakSingleton
+  
+}
@@ -23,7 +23,7 @@
 //

 ///A key used to store definitons in a container.
-public struct DefinitionKey : Hashable, CustomStringConvertible {
+public struct DefinitionKey: Hashable, CustomStringConvertible {
  public let type: Any.Type
  public let typeOfArguments: Any.Type
  public private(set) var tag: DependencyContainer.Tag?
@@ -34,123 +34,30 @@ public struct DefinitionKey : Hashable, CustomStringConvertible {
    self.tag = tag
  }
  
-  public var hashValue: Int {
-    return "\(type)-\(typeOfArguments)-\(tag)".hashValue
+  public func hash(into hasher: inout Hasher) {
+    hasher.combine(ObjectIdentifier(type))
+    hasher.combine(ObjectIdentifier(typeOfArguments))
+    hasher.combine(tag.desc)
  }
  
  public var description: String {
-    return "type: \(type), arguments: \(typeOfArguments), tag: \(tag.desc)"
+    return "type: \(String(reflecting: type)), arguments: \(typeOfArguments), tag: \(tag.desc)"
  }
  
-  func tagged(_ tag: DependencyContainer.Tag?) -> DefinitionKey {
+  func tagged(with tag: DependencyContainer.Tag?) -> DefinitionKey {
    var tagged = self
    tagged.tag = tag
    return tagged
  }
-  
-}

-/// Check two definition keys on equality by comparing their `type`, `factoryType` and `tag` properties.
-public func ==(lhs: DefinitionKey, rhs: DefinitionKey) -> Bool {
-  return
-    lhs.type == rhs.type &&
+  /// Check two definition keys on equality by comparing their `type`, `factoryType` and `tag` properties.
+  public static func ==(lhs: DefinitionKey, rhs: DefinitionKey) -> Bool {
+    return
+      lhs.type == rhs.type &&
      lhs.typeOfArguments == rhs.typeOfArguments &&
-      lhs.tag == rhs.tag
-}
-
-///Component scope defines a strategy used by the `DependencyContainer` to manage resolved instances life cycle.
-public enum ComponentScope {
-  /**
-   A new instance will be created every time it's resolved.
-   This is a default strategy. Use this strategy when you don't want instances to be shared
-   between different consumers (i.e. if it is not thread safe).
-   
-   **Example**:
-   
-   ```
-   container.register { ServiceImp() as Service }
-   container.register { 
-     ServiceConsumerImp(
-       service1: try container.resolve() as Service
-       service2: try container.resolve() as Service
-     ) as ServiceConsumer
-   }
-   let consumer = container.resolve() as ServiceConsumer
-   consumer.service1 !== consumer.service2 //true
-   
-   ```
-   */
-  case unique
+      lhs.tag.desc == rhs.tag.desc
+  }
  
-  /**
-   Instance resolved with the same definition will be reused until topmost `resolve(tag:)` method returns.
-   When you resolve the same object graph again the container will create new instances.
-   Use this strategy if you want different object in objects graph to share the same instance.
-   
-   - warning: Make sure this component is thread safe or accessed always from the same thread.
-   
-   **Example**:
-   
-   ```
-   container.register { ServiceImp() as Service }
-   container.register {
-     ServiceConsumerImp(
-       service1: try container.resolve() as Service
-       service2: try container.resolve() as Service
-     ) as ServiceConsumer
-   }
-   let consumer1 = container.resolve() as ServiceConsumer
-   let consumer2 = container.resolve() as ServiceConsumer
-   consumer1.service1 === consumer1.service2 //true
-   consumer2.service1 === consumer2.service2 //true
-   consumer1.service1 !== consumer2.service1 //true
-   ```
-   */
-  case shared
-  
-  /**
-   Resolved instance will be retained by the container and always reused.
-   Do not mix this life cycle with _singleton pattern_.
-   Instance will be not shared between different containers unless they collaborate.
-   
-   - warning: Make sure this component is thread safe or accessed always from the same thread.
-   
-   - note: When you override or remove definition from the container an instance 
-           that was resolved with this definition will be released. When you reset 
-           the container it will release all singleton instances.
-   
-   **Example**:
-   
-   ```
-   container.register(.singleton) { ServiceImp() as Service }
-   container.register {
-     ServiceConsumerImp(
-       service1: try container.resolve() as Service
-       service2: try container.resolve() as Service
-     ) as ServiceConsumer
-   }
-   let consumer1 = container.resolve() as ServiceConsumer
-   let consumer2 = container.resolve() as ServiceConsumer
-   consumer1.service1 === consumer1.service2 //true
-   consumer2.service1 === consumer2.service2 //true
-   consumer1.service1 === consumer2.service1 //true
-   ```
-   */
-  case singleton
-  
-  /**
-   The same scope as a `Singleton`, but instance will be created when container is bootstrapped.
-   
-   - seealso: `bootstrap()`
-  */
-  case eagerSingleton
-  
-  /**
-   The same scope as a `Singleton`, but container stores week reference to the resolved instance.
-   While a strong reference to the resolved instance exists resolve will return the same instance.
-   After the resolved instance is deallocated next resolve will produce a new instance.
-  */
-  case weakSingleton
 }

 ///Dummy protocol to store definitions for different types in collection
@@ -167,20 +74,21 @@ public protocol DefinitionType: class { }
 public final class Definition<T, U>: DefinitionType {
  public typealias F = (U) throws -> T
  
-  init(scope: ComponentScope, factory: @escaping F) {
-    self.factory = factory
-    self.scope = scope
-  }
-  
  //MARK: - _Definition

  weak var container: DependencyContainer?
  
  let factory: F
  let scope: ComponentScope
-  fileprivate(set) var weakFactory: ((Any) throws -> Any)!
-  fileprivate(set) var resolveProperties: ((DependencyContainer, Any) throws -> ())?
+  var weakFactory: ((Any) throws -> Any)!
+  var resolveProperties: ((DependencyContainer, Any) throws -> ())?
+  var autoInjectProperties: Bool?
  
+  init(scope: ComponentScope, factory: @escaping F) {
+    self.factory = factory
+    self.scope = scope
+  }
+
  /**
   Set the block that will be used to resolve dependencies of the instance.
   This block will be called before `resolve(tag:)` returns.
@@ -220,6 +128,34 @@ public final class Definition<T, U>: DefinitionType {
    return self
  }

+  @discardableResult public func resolvingProperty<Root, V>(_ keyPath: ReferenceWritableKeyPath<Root, V>, as type: Any.Type = V.self, tag: DependencyTagConvertible? = nil) -> Definition {
+    return resolvingProperties { (container, instance) in
+      precondition(instance is Root, "Type of resolved instance \(Swift.type(of: instance)) does not match expected type \(Root.self)")
+      let resolved = try container.resolve(type, tag: tag)
+      precondition(resolved is V, "Type of resolved property \(Swift.type(of: resolved)) does not match expected type \(type)")
+      (instance as! Root)[keyPath: keyPath] = resolved as! V
+    }
+  }
+
+  @discardableResult public func resolvingProperty<Root, V>(_ keyPath: ReferenceWritableKeyPath<Root, V>, factory: @escaping (DependencyContainer) throws -> V = { try $0.resolve() }) -> Definition {
+    return resolvingProperties { (container, instance) in
+      precondition(instance is Root, "Type of resolved instance \(Swift.type(of: instance)) does not match expected type \(Root.self)")
+      (instance as! Root)[keyPath: keyPath] = try factory(container)
+    }
+  }
+
+  /**
+   Whether container should perform properties auto-injection when resolving using this definition.
+   If called will override container configuration. Can be called together with `resolvingProperties`
+   to resolve properties that are not automatically injected.
+
+   - parameter shouldAutoInject: Whether container should perform properties auto-injection when resolving using this definition. Default is `true`.
+  */
+  @discardableResult public func autoInjectingProperties(_ shouldAutoInject: Bool = true) -> Definition {
+    autoInjectProperties = shouldAutoInject
+    return self
+  }
+
  /// Calls `resolveDependencies` block if it was set.
  func resolveProperties(of instance: Any, container: DependencyContainer) throws {
    guard let resolvedInstance = instance as? T else { return }
@@ -233,40 +169,40 @@ public final class Definition<T, U>: DefinitionType {
  
  //MARK: - AutoWiringDefinition
  
-  fileprivate(set) var autoWiringFactory: ((DependencyContainer, DependencyContainer.Tag?) throws -> Any)?
-  fileprivate(set) var numberOfArguments: Int = 0
+  var autoWiringFactory: ((DependencyContainer, DependencyContainer.Tag?) throws -> Any)?
+  var numberOfArguments: Int = 0
  
  //MARK: - TypeForwardingDefinition
  
  /// Types that can be resolved using this definition.
-  fileprivate(set) var implementingTypes: [Any.Type] = [(T?).self, (T!).self]
+  private(set) var implementingTypes: [Any.Type] = [(T?).self]
  
  /// Return `true` if type can be resolved using this definition
-  func doesImplements(_ type: Any.Type) -> Bool {
-    return implementingTypes.contains(where: { $0 == type })
+  func doesImplements(type aType: Any.Type) -> Bool {
+    return implementingTypes.contains(where: { $0 == aType })
  }
  
  //MARK: - _TypeForwardingDefinition

  /// Adds type as being able to be resolved using this definition
-  fileprivate func _implements(_ type: Any.Type) {
-    _implements([type])
+  func _implements(type aType: Any.Type) {
+    _implements(types: [aType])
  }
  
  /// Adds types as being able to be resolved using this definition
-  fileprivate func _implements(_ types: [Any.Type]) {
-    implementingTypes.append(contentsOf: types.filter({ !doesImplements($0) }))
+  func _implements(types aTypes: [Any.Type]) {
+    implementingTypes.append(contentsOf: aTypes.filter({ !doesImplements(type: $0) }))
  }
  
  /// Definition to which resolution will be forwarded to
-  fileprivate weak var forwardsTo: _TypeForwardingDefinition? {
+  weak var forwardsTo: _TypeForwardingDefinition? {
    didSet {
      //both definitions (self and forwardsTo) can resolve
      //each other types and each other implementing types
      //this relationship can be used to reuse previously resolved instances
      if let forwardsTo = forwardsTo {
-        _implements(forwardsTo.type)
-        _implements(forwardsTo.implementingTypes)
+        _implements(type: forwardsTo.type)
+        _implements(types: forwardsTo.implementingTypes)
        
        //definitions for types that can be resolved by `forwardsTo` definition
        //can also be used to resolve self type and it's implementing types
@@ -274,40 +210,41 @@ public final class Definition<T, U>: DefinitionType {
        //when there are several forwarded definitions
        //see testThatItReusesInstanceResolvedByTypeForwarding)
        for definition in forwardsTo.forwardsFrom {
-          definition._implements(type)
-          definition._implements(implementingTypes)
+          definition._implements(type: type)
+          definition._implements(types: implementingTypes)
        }
        
        //forwardsTo can be used to resolve self type and it's implementing types
-        forwardsTo._implements(type)
-        forwardsTo._implements(implementingTypes)
+        forwardsTo._implements(type: type)
+        forwardsTo._implements(types: implementingTypes)
        forwardsTo.forwardsFrom.append(self)
      }
    }
  }
  
  /// Definitions that will forward resolution to this definition
-  fileprivate var forwardsFrom: [_TypeForwardingDefinition] = []
+  var forwardsFrom: [_TypeForwardingDefinition] = []
  
 }

 //MARK: - _Definition

-protocol _Definition: DefinitionType, AutoWiringDefinition, TypeForwardingDefinition {
+protocol _Definition: AutoWiringDefinition, TypeForwardingDefinition {
  var type: Any.Type { get }
  var scope: ComponentScope { get }
  var weakFactory: ((Any) throws -> Any)! { get }
  func resolveProperties(of instance: Any, container: DependencyContainer) throws
  var container: DependencyContainer? { get set }
+  var autoInjectProperties: Bool? { get }
 }

 //MARK: - Type Forwarding

-private protocol _TypeForwardingDefinition: TypeForwardingDefinition, _Definition {
-  weak var forwardsTo: _TypeForwardingDefinition? { get set }
+protocol _TypeForwardingDefinition: _Definition {
+  var forwardsTo: _TypeForwardingDefinition? { get }
  var forwardsFrom: [_TypeForwardingDefinition] { get set }
-  func _implements(_ type: Any.Type)
-  func _implements(_ type: [Any.Type])
+  func _implements(type aType: Any.Type)
+  func _implements(types aTypes: [Any.Type])
 }

 extension Definition: _TypeForwardingDefinition {
@@ -364,12 +301,12 @@ private func ~=(lhs: KeyDefinitionPair, rhs: KeyDefinitionPair) -> Bool {
 }

 /// Returns key-defintion pairs with definitions able to resolve that type (directly or via type forwarding)
-/// and which tag matches provided key's tag or is nil.
+/// and which tag matches provided key's tag or is nil if strictByTag is false.
 /// In the end filters defintions by type of runtime arguments.
-func filter(_ definitions: [KeyDefinitionPair], byKey key: DefinitionKey, byTypeOfArguments: Bool = false) -> [KeyDefinitionPair] {
-  let definitions = definitions
-    .filter({ $0.key.type == key.type || $0.definition.doesImplements(key.type) })
-    .filter({ $0.key.tag == key.tag || $0.key.tag == nil })
+func filter(definitions _definitions: [KeyDefinitionPair], byKey key: DefinitionKey, strictByTag: Bool = false, byTypeOfArguments: Bool = false) -> [KeyDefinitionPair] {
+  let definitions = _definitions
+    .filter({ $0.key.type == key.type || $0.definition.doesImplements(type: key.type) })
+    .filter({ $0.key.tag == key.tag || (!strictByTag && $0.key.tag == nil) })
  if byTypeOfArguments {
    return definitions.filter({ $0.key.typeOfArguments == key.typeOfArguments })
  }
@@ -379,8 +316,8 @@ func filter(_ definitions: [KeyDefinitionPair], byKey key: DefinitionKey, byType
 }

 /// Orders key-definition pairs putting first definitions registered for provided tag.
-func order(_ definitions: [KeyDefinitionPair], byTag tag: DependencyContainer.Tag?) -> [KeyDefinitionPair] {
+func order(definitions _definitions: [KeyDefinitionPair], byTag tag: DependencyContainer.Tag?) -> [KeyDefinitionPair] {
  return
-    definitions.filter({ $0.key.tag == tag }) +
-      definitions.filter({ $0.key.tag != tag })
+    _definitions.filter({ $0.key.tag == tag }) +
+      _definitions.filter({ $0.key.tag != tag })
 }
@@ -34,23 +34,25 @@ public final class DependencyContainer {
   
   - seealso: `DependencyTagConvertible`
   */
-  public enum Tag: Equatable {
+  public enum Tag {
    case String(StringLiteralType)
    case Int(IntegerLiteralType)
  }
-  
+
+  var autoInjectProperties: Bool
+  var threadSafe: Bool
  internal(set) public var context: Context!
  var definitions = [DefinitionKey: _Definition]()
-  fileprivate var resolvedInstances = ResolvedInstances()
+  var resolvedInstances = ResolvedInstances()
  private let lock = RecursiveLock()
  
-  fileprivate(set) var bootstrapped = false
-  fileprivate var bootstrapQueue: [() throws -> ()] = []
+  var bootstrapped = false
+  var bootstrapQueue: [() throws -> ()] = []
  
  private var _weakCollaborators: [WeakBox<DependencyContainer>] = []
-  fileprivate(set) var _collaborators: [DependencyContainer] {
+  var _collaborators: [DependencyContainer] {
    get {
-      return _weakCollaborators.flatMap({ $0.value })
+      return _weakCollaborators.compactMap({ $0.value })
    }
    set {
      _weakCollaborators = newValue.filter({ $0 !== self }).map(WeakBox.init)
@@ -59,8 +61,11 @@ public final class DependencyContainer {

  /**
   Designated initializer for a DependencyContainer
-   
-   - parameter configBlock: A configuration block in which you typically put all you `register` calls.
+
+   - Parameters:
+     - autoInjectProperties: Whether container should perform properties auto-injection. Default is `true`.
+     - threadSafe: Whether container should be thread-safe. Default is `true`. You may want to disable it for better performance.
+     - configBlock: A configuration block in which you typically put all you `register` calls.
   
   - note: The `configBlock` is simply called at the end of the `init` to let you configure everything. 
           It is only present for convenience to have a cleaner syntax when declaring and initializing
@@ -79,7 +84,9 @@ public final class DependencyContainer {
   
   - returns: A new DependencyContainer.
   */
-  public init(configBlock: (DependencyContainer)->() = { _ in }) {
+  public init(autoInjectProperties: Bool = true, threadSafe: Bool = true, configBlock: (DependencyContainer)->() = { _ in }) {
+    self.autoInjectProperties = autoInjectProperties
+    self.threadSafe = threadSafe
    configBlock(self)
  }
  
@@ -99,11 +106,13 @@ public final class DependencyContainer {
    }
  }

-  fileprivate func threadSafe<T>(_ closure: () throws -> T) rethrows -> T {
-    lock.lock()
-    defer {
-      lock.unlock()
+  func threadSafe<T>(_ closure: () throws -> T) rethrows -> T {
+    guard threadSafe else {
+      return try closure()
    }
+
+    lock.lock()
+    defer { lock.unlock() }
    return try closure()
  }
  
@@ -169,12 +178,15 @@ extension DependencyContainer {
    /// The label of the property where resolved instance will be auto-injected.
    private(set) public var injectedInProperty: String?
    
+    let inCollaboration: Bool
+    
    var logErrors: Bool = true
    
-    init(key: DefinitionKey, injectedInType: Any.Type?, injectedInProperty: String?) {
+    init(key: DefinitionKey, injectedInType: Any.Type?, injectedInProperty: String?, inCollaboration: Bool) {
      self.key = key
      self.injectedInType = injectedInType
      self.injectedInProperty = injectedInProperty
+      self.inCollaboration = inCollaboration
    }
    
    public var debugDescription: String {
@@ -182,7 +194,7 @@ extension DependencyContainer {
    }
    
    public var description: String {
-      let resolvingDescription = "Resolving type \(key.type) with arguments \(key.typeOfArguments) tagged with \(key.tag.desc)"
+      let resolvingDescription = "Resolving type \(key.type) with arguments \(key.typeOfArguments) \(key.tag != nil ? "tagged with \(key.tag!)" : "")"
      if injectedInProperty != nil {
        return "\(resolvingDescription) while auto-injecting property \(injectedInProperty.desc) of \(injectedInType.desc)"
      }
@@ -198,7 +210,8 @@ extension DependencyContainer {

  /// Pushes new context created with provided values and calls block. When block returns previous context is restored.
  /// When popped to initial (root) context will release all references to resolved instances and call `Resolvable` callbacks.
-  func inContext<T>(_ key: DefinitionKey, injectedInType: Any.Type?, injectedInProperty: String? = nil, logErrors: Bool! = nil, block: () throws -> T) rethrows -> T {
+  func inContext<T>(key aKey: DefinitionKey, injectedInType: Any.Type?, injectedInProperty: String? = nil, inCollaboration: Bool = false, container: DependencyContainer? = nil, logErrors: Bool! = nil, block: () throws -> T) rethrows -> T {
+    let key = aKey
    return try threadSafe {
      let currentContext = self.context
      
@@ -208,13 +221,15 @@ extension DependencyContainer {
        //clean instances pool if it is owned not by other container
        if context == nil {
          resolvedInstances.resolvedInstances.removeAll()
+          for (key, instance) in resolvedInstances.sharedWeakSingletons {
+            if resolvedInstances.sharedWeakSingletons[key] is WeakBoxType { continue }
+            resolvedInstances.sharedWeakSingletons[key] = WeakBox(instance)
+          }
          for (key, instance) in resolvedInstances.weakSingletons {
            if resolvedInstances.weakSingletons[key] is WeakBoxType { continue }
            resolvedInstances.weakSingletons[key] = WeakBox(instance)
          }
          
-          // We call didResolveDependencies only at this point
-          // because this is a point when dependencies graph is complete.
          for resolvedInstance in resolvedInstances.resolvableInstances.reversed() {
            resolvedInstance.didResolveDependencies()
          }
@@ -225,7 +240,8 @@ extension DependencyContainer {
      context = Context(
        key: key,
        injectedInType: injectedInType,
-        injectedInProperty: injectedInProperty
+        injectedInProperty: injectedInProperty,
+        inCollaboration: inCollaboration
      )
      context.logErrors = logErrors ?? currentContext?.logErrors ?? true
      
@@ -233,7 +249,7 @@ extension DependencyContainer {
        return try block()
      }
      catch {
-        if context.logErrors { log(.Errors, error) }
+        if context.logErrors { log(level: .Errors, error) }
        throw error
      }
    }
@@ -241,318 +257,6 @@ extension DependencyContainer {

 }

-// MARK: - Registering definitions
-
-extension DependencyContainer {
-  
-  /**
-   Register factory for type `T` and associate it with an optional tag.
-
-   - parameters:
-      - scope: The scope to use for instance created by the factory. Default value is `Shared`.
-      - type: Type to register definition for. Default value is return value of factory.
-      - tag: The arbitrary tag to associate this factory with. Pass `nil` to associate with any tag. Default value is `nil`.
-      - factory: The factory that produces instance of `type`. Will be used to resolve instances of `type`.
-
-   - returns: A registered definition.
-
-   - note: You should cast the factory return type to the protocol you want to register it for
-           (unless you want to register concrete type) or provide `type` parameter.
-   
-   - seealso: `Definition`, `ComponentScope`, `DependencyTagConvertible`
-
-   **Example**:
-   ```swift
-   //Register ServiceImp as Service
-   container.register { ServiceImp() as Service }
-   
-   //Register ServiceImp as Service named by "service"
-   container.register(tag: "service") { ServiceImp() as Service }
-   
-   //Register unique ServiceImp as Service
-   container.register(.unique) { ServiceImp() as Service }
-   
-   //Register ClientImp as Client and resolve it's service dependency
-   container.register { try ClientImp(service: container.resolve() as Service) as Client }
-   
-   //Register ServiceImp as concrete type
-   container.register { ServiceImp() }
-   container.register(factory: ServiceImp.init)
-   
-   //Register ServiceImp as Service
-   container.register(Service.self, factory: ServiceImp.init)
-   
-   //Register ClientImp as Client
-   container.register(Client.self, factory: ClientImp.init(service:))
-   ```
-   */
-  @discardableResult public func register<T>(_ scope: ComponentScope = .shared, type: T.Type = T.self, tag: DependencyTagConvertible? = nil, factory: @escaping () throws -> T) -> Definition<T, ()> {
-    let definition = DefinitionBuilder<T, ()> {
-      $0.scope = scope
-      $0.factory = factory
-    }.build()
-    register(definition, tag: tag)
-    return definition
-  }
-
-  /**
-   Register generic factory and auto-wiring factory and associate it with an optional tag.
-   
-   - parameters:
-      - tag: The arbitrary tag to associate this factory with. Pass `nil` to associate with any tag. Default value is `nil`.
-      - scope: The scope to use for instance created by the factory.
-      - factory: The factory to register.
-      - numberOfArguments: The number of factory arguments. Will be used on auto-wiring to sort definitions.
-      - autoWiringFactory: The factory to be used on auto-wiring to resolve component.
-   
-   - returns: A registered definition.
-   
-   - note: You _should not_ call this method directly, instead call any of other `register` methods.
-   You _should_ use this method only to register dependency with more runtime arguments
-   than _Dip_ supports (currently it's up to six) like in the following example:
-   
-   ```swift
-   public func register<T, A, B, C, ...>(_ scope: ComponentScope = .shared, type: T.Type = T.self, tag: Tag? = nil, factory: (A, B, C, ...) throws -> T) -> Definition<T, (A, B, C, ...)> {
-     return register(scope: scope, type: type, tag: tag, factory: factory, numberOfArguments: ...) { container, tag in
-        try factory(container.resolve(tag: tag), ...)
-      }
-   }
-   ```
-   
-   Though before you do so you should probably review your design and try to reduce number of depnedencies.
-   */
-  public func register<T, U>(scope: ComponentScope, type: T.Type, tag: DependencyTagConvertible?, factory: @escaping (U) throws -> T, numberOfArguments: Int, autoWiringFactory: @escaping (DependencyContainer, Tag?) throws -> T) -> Definition<T, U> {
-    let definition = DefinitionBuilder<T, U> {
-      $0.scope = scope
-      $0.factory = factory
-      $0.numberOfArguments = numberOfArguments
-      $0.autoWiringFactory = autoWiringFactory
-    }.build()
-    register(definition, tag: tag)
-    return definition
-  }
-
-  /**
-   Register definiton in the container and associate it with an optional tag.
-   Will override already registered definition for the same type and factory, associated with the same tag.
-   
-   - parameters:
-      - tag: The arbitrary tag to associate this definition with. Pass `nil` to associate with any tag. Default value is `nil`.
-      - definition: The definition to register in the container.
-   
-   */
-  public func register<T, U>(_ definition: Definition<T, U>, tag: DependencyTagConvertible? = nil) {
-    precondition(!bootstrapped, "You can not modify container's definitions after it was bootstrapped.")
-    
-    threadSafe {
-      let key = DefinitionKey(type: T.self, typeOfArguments: U.self, tag: tag?.dependencyTag)
-      if let _ = definitions[key] {
-        remove(definitionForKey: key)
-      }
-      
-      definition.container = self
-      definitions[key] = definition
-      resolvedInstances.singletons[key] = nil
-      resolvedInstances.weakSingletons[key] = nil
-      
-      if case .eagerSingleton = definition.scope {
-        bootstrapQueue.append({ let _ = try self.resolve(tag: tag) as T })
-      }
-    }
-  }
-  
-}
-
-// MARK: - Resolve dependencies
-
-extension DependencyContainer {
-  
-  /**
-   Resolve an instance of type `T`.
-   
-   If no matching definition was registered with provided `tag`,
-   container will lookup definition associated with `nil` tag.
-   
-   - parameter tag: The arbitrary tag to use to lookup definition.
-   
-   - throws: `DipError.DefinitionNotFound`, `DipError.AutoInjectionFailed`, `DipError.AmbiguousDefinitions`, `DipError.InvalidType`
-   
-   - returns: An instance of type `T`.
-   
-   **Example**:
-   ```swift
-   let service = try! container.resolve() as Service
-   let service = try! container.resolve(tag: "service") as Service
-   let service: Service = try! container.resolve()
-   ```
-   
-   - seealso: `register(_:type:tag:factory:)`
-   */
-  public func resolve<T>(tag: DependencyTagConvertible? = nil) throws -> T {
-    return try resolve(tag: tag) { factory in try factory() }
-  }
-  
-  /**
-   Resolve an instance of requested type. Weakly-typed alternative of `resolve(tag:)`
-   
-   - warning: This method does not make any type checks, so there is no guaranty that
-              resulting instance is actually an instance of requested type.
-              That can happen if you register forwarded type that is not implemented by resolved instance.
-   
-   - parameters:
-      - type: Type to resolve
-      - tag: The arbitrary tag to use to lookup definition.
-   
-   - throws: `DipError.DefinitionNotFound`, `DipError.AutoInjectionFailed`, `DipError.AmbiguousDefinitions`, `DipError.InvalidType`
-   
-   - returns: An instance of requested type.
-
-   **Example**:
-   ```swift
-   let service = try! container.resolve(Service.self) as! Service
-   let service = try! container.resolve(Service.self, tag: "service") as! Service
-   ```
-
-   - seealso: `resolve(tag:)`, `register(_:type:tag:factory:)`
-   */
-  public func resolve(_ type: Any.Type, tag: DependencyTagConvertible? = nil) throws -> Any {
-    return try resolve(type, tag: tag) { factory in try factory() }
-  }
-
-  /**
-   Resolve an instance of type `T` using generic builder closure that accepts generic factory and returns created instance.
-   
-   - parameters:
-      - tag: The arbitrary tag to use to lookup definition.
-      - builder: Generic closure that accepts generic factory and returns inctance created by that factory.
-   
-   - throws: `DipError.DefinitionNotFound`, `DipError.AutoInjectionFailed`, `DipError.AmbiguousDefinitions`, `DipError.InvalidType`
-   
-   - returns: An instance of type `T`.
-   
-   - note: You _should not_ call this method directly, instead call any of other 
-           `resolve(tag:)` or `resolve(tag:withArguments:)` methods.
-           You _should_ use this method only to resolve dependency with more runtime arguments than
-           _Dip_ supports (currently it's up to six) like in the following example:
-   
-   ```swift
-   public func resolve<T, A, B, C, ...>(tag: Tag? = nil, _ arg1: A, _ arg2: B, _ arg3: C, ...) throws -> T {
-     return try resolve(tag: tag) { factory in factory(arg1, arg2, arg3, ...) }
-   }
-   ```
-   
-   Though before you do so you should probably review your design and try to reduce the number of dependencies.
-   */
-  public func resolve<T, U>(tag: DependencyTagConvertible? = nil, builder: ((U) throws -> T) throws -> T) throws -> T {
-    return try resolve(T.self, tag: tag, builder: { factory in
-      try builder({ try factory($0) as! T })
-    }) as! T
-  }
-  
-  /**
-   Resolve an instance of provided type using builder closure. Weakly-typed alternative of `resolve(tag:builder:)`
-   
-   - seealso: `resolve(tag:builder:)`
-  */
-  public func resolve<U>(_ type: Any.Type, tag: DependencyTagConvertible? = nil, builder: ((U) throws -> Any) throws -> Any) throws -> Any {
-    let key = DefinitionKey(type: type, typeOfArguments: U.self, tag: tag?.dependencyTag)
-    
-    return try inContext(key, injectedInType: context?.resolvingType) {
-      try resolve(key: key, builder: { definition in
-        try builder(definition.weakFactory)
-      })
-    }
-  }
-  
-  /// Lookup definition by the key and use it to resolve instance. Fallback to the key with `nil` tag.
-  func resolve<T>(key: DefinitionKey, builder: (_Definition) throws -> T) throws -> T {
-    guard let matching = self.definition(matching: key) else {
-      return try resolveCollaborating(key, builder: builder) ?? autowire(key)
-    }
-    
-    let (key, definition) = matching
-    
-    //first search for already resolved instance for this type or any of forwarding types
-    if let previouslyResolved: T = previouslyResolved(definition, key: key) {
-      log(.Verbose, "Reusing previously resolved instance \(previouslyResolved)")
-      return previouslyResolved
-    }
-    
-    log(.Verbose, context)
-    var resolvedInstance = try builder(definition)
-    
-    /*
-     Strongly-typed `resolve(tag:builder:)` calls weakly-typed `resolve(_:tag:builder:)`,
-     so `T` will be `Any` at runtime, erasing type information when this method returns.
-     When we try to cast result of `Any` to generic type T Swift fails to cast it.
-     The same happens in the following code snippet:
-     
-     let optService: Service? = ServiceImp()
-     let anyService: Any = optService
-     let service: Service = anyService as! Service
-     
-     That happens because when Optional is casted to Any Swift can not implicitly unwrap it with as operator.
-     As a workaround we detect boxing here and unwrap it so that we return not a box, but wrapped instance.
-     */
-    if let box = resolvedInstance as? BoxType, let unboxed = box.unboxed as? T {
-      resolvedInstance = unboxed
-    }
-    
-    //when builder calls factory it will in turn resolve sub-dependencies (if there are any)
-    //when it returns instance that we try to resolve here can be already resolved
-    //so we return it, throwing away instance created by previous call to builder
-    if let previouslyResolved: T = previouslyResolved(definition, key: key) {
-      log(.Verbose, "Reusing previously resolved instance \(previouslyResolved)")
-      return previouslyResolved
-    }
-
-    resolvedInstances[key: key, inScope: definition.scope] = resolvedInstance
-
-    if let resolvable = resolvedInstance as? Resolvable {
-      resolvedInstances.resolvableInstances.append(resolvable)
-      resolvable.resolveDependencies(self)
-    }
-
-    try autoInjectProperties(resolvedInstance)
-    try definition.resolveProperties(of: resolvedInstance, container: self)
-    
-    log(.Verbose, "Resolved type \(key.type) with \(resolvedInstance)")
-    return resolvedInstance
-  }
-  
-  private func previouslyResolved<T>(_ definition: _Definition, key: DefinitionKey) -> T? {
-    //first check if exact key was already resolved
-    if let previouslyResolved = resolvedInstances[key: key, inScope: definition.scope] as? T {
-      return previouslyResolved
-    }
-    //then check if any related type was already resolved
-    let keys = definition.implementingTypes.map({
-      DefinitionKey(type: $0, typeOfArguments: key.typeOfArguments, tag: key.tag)
-    })
-    for key in keys {
-      if let previouslyResolved = resolvedInstances[key: key, inScope: definition.scope] as? T {
-        return previouslyResolved
-      }
-    }
-    return nil
-  }
-  
-  /// Searches for definition that matches provided key
-  private func definition(matching key: DefinitionKey) -> KeyDefinitionPair? {
-    if let definition = (self.definitions[key] ?? self.definitions[key.tagged(nil)]) {
-      return (key, definition)
-    }
-    
-    //if no definition registered for exact type try to find type-forwarding definition that can resolve the type
-    //that will actually happen only when resolving optionals
-    if definitions.filter({ $0.0.type == key.type }).isEmpty {
-      return typeForwardingDefinition(key)
-    }
-    return nil
-  }
-  
-}
-
 //MARK: - Collaborating containers

 extension DependencyContainer {
@@ -572,21 +276,31 @@ extension DependencyContainer {
  public func collaborate(with containers: [DependencyContainer]) {
    _collaborators += containers
    for container in containers {
-      container.resolvedInstances.singletonsBox = self.resolvedInstances.singletonsBox
-      container.resolvedInstances.weakSingletonsBox = self.resolvedInstances.weakSingletonsBox
+      container._collaborators += [self]
+      container.resolvedInstances.sharedSingletonsBox = self.resolvedInstances.sharedSingletonsBox
+      container.resolvedInstances.sharedWeakSingletonsBox = self.resolvedInstances.sharedWeakSingletonsBox
+      updateCollaborationReferences(between: container, and: self)
+    }
+  }
+  
+  private func updateCollaborationReferences(between container: DependencyContainer, and collaborator: DependencyContainer) {
+    for container in container._collaborators {
+      guard container.resolvedInstances.sharedSingletonsBox !== collaborator.resolvedInstances.sharedSingletonsBox else { continue }
+      container.resolvedInstances.sharedSingletonsBox = collaborator.resolvedInstances.sharedSingletonsBox
+      container.resolvedInstances.sharedWeakSingletonsBox = collaborator.resolvedInstances.sharedWeakSingletonsBox
+      updateCollaborationReferences(between: container, and: collaborator)
    }
  }
  
  /// Tries to resolve key using collaborating containers
-  fileprivate func resolveCollaborating<T>(_ key: DefinitionKey, builder: (_Definition) throws -> T) -> T? {
+  func collaboratingResolve<T>(key aKey: DefinitionKey, builder: (_Definition) throws -> T) -> T? {
+    let key = aKey
    for collaborator in _collaborators {
      //if container is already in a context resolving this type
      //it means that it has been already called to resolve this type,
      //so there is probably a cercular reference between containers.
      //To break it skip this container
-      if let context = collaborator.context,
-        context.resolvingType == key.type &&
-          context.tag == key.tag { continue }
+      if let context = collaborator.context, context.resolvingType == key.type && context.tag == key.tag { continue }
      
      do {
        //Pass current container's instances pool to collect instances resolved by collaborator
@@ -596,12 +310,24 @@ extension DependencyContainer {
        let context = collaborator.context
        collaborator.context = self.context
        defer {
-          collaborator.resolvedInstances = resolvedInstances
          collaborator.context = context
+          collaborator.resolvedInstances = resolvedInstances
+          
+          for (key, resolvedSingleton) in self.resolvedInstances.singletons {
+            collaborator.resolvedInstances.singletons[key] = resolvedSingleton
+          }
+          for (key, resolvedSingleton) in self.resolvedInstances.weakSingletons {
+            guard collaborator.definition(matching: key) == nil else { continue }
+            collaborator.resolvedInstances.weakSingletons[key] = resolvedSingleton is WeakBoxType ? resolvedSingleton :  WeakBox(resolvedSingleton)
+          }
+          for (key, resolved) in self.resolvedInstances.resolvedInstances {
+            guard collaborator.definition(matching: key) == nil else { continue }
+            collaborator.resolvedInstances.resolvedInstances[key] = resolved
+          }
        }
        
-        let resolved = try collaborator.inContext(key, injectedInType: self.context.injectedInType, injectedInProperty: self.context.injectedInProperty, logErrors: false) {
-          try collaborator.resolve(key: key, builder: builder)
+        let resolved = try collaborator.inContext(key:key, injectedInType: self.context.injectedInType, injectedInProperty: self.context.injectedInProperty, inCollaboration: true, logErrors: false) {
+          try collaborator._resolve(key: key, builder: builder)
        }

        return resolved
@@ -619,17 +345,21 @@ extension DependencyContainer {
  
  /**
   Removes definition registered in the container.
-
+   
   - parameters:
      - tag: The tag used to register definition.
      - definition: The definition to remove
   */
  public func remove<T, U>(_ definition: Definition<T, U>, tag: DependencyTagConvertible? = nil) {
-    let key = DefinitionKey(type: T.self, typeOfArguments: U.self, tag: tag?.dependencyTag)
-    remove(definitionForKey: key)
+    _remove(definition: definition, tag: tag)
  }
  
-  fileprivate func remove(definitionForKey key: DefinitionKey) {
+  func _remove<T, U>(definition aDefinition: Definition<T, U>, tag: DependencyTagConvertible? = nil) {
+    let key = DefinitionKey(type: T.self, typeOfArguments: U.self, tag: tag?.dependencyTag)
+    _remove(definitionForKey: key)
+  }
+  
+  func _remove(definitionForKey key: DefinitionKey) {
    precondition(!bootstrapped, "You can not modify container's definitions after it was bootstrapped.")
    
    threadSafe {
@@ -637,6 +367,8 @@ extension DependencyContainer {
      definitions[key] = nil
      resolvedInstances.singletons[key] = nil
      resolvedInstances.weakSingletons[key] = nil
+      resolvedInstances.sharedSingletons[key] = nil
+      resolvedInstances.sharedWeakSingletons[key] = nil
    }
  }

@@ -649,12 +381,16 @@ extension DependencyContainer {
      definitions.removeAll()
      resolvedInstances.singletons.removeAll()
      resolvedInstances.weakSingletons.removeAll()
+      resolvedInstances.sharedSingletons.removeAll()
+      resolvedInstances.sharedWeakSingletons.removeAll()
      bootstrapped = false
    }
  }

 }

+// MARK: - Validation
+
 extension DependencyContainer {
  
  /**
@@ -665,15 +401,21 @@ extension DependencyContainer {
   
   - parameter arguments: set of arguments to use to resolve registered definitions.
                          Use a tuple for registered factories that accept several runtime arguments.
-  */
+   */
  public func validate(_ arguments: Any...) throws {
+    try _validate(arguments: arguments)
+  }
+  
+  func _validate(arguments _arguments: [Any]) throws {
+    let arguments = _arguments
    validateNextDefinition: for (key, _) in definitions {
      do {
        //try to resolve key using provided arguments
-        for argumentsSet in arguments where type(of: argumentsSet) == key.typeOfArguments {
+        for argumentsSet in arguments {
+          guard type(of: argumentsSet) == key.typeOfArguments else { continue }
          do {
-            let _ = try inContext(key, injectedInType: nil) {
-              try resolve(key: key, builder: { definition throws -> Any in
+            let _ = try inContext(key:key, injectedInType: nil) {
+              try self._resolve(key: key, builder: { definition throws -> Any in
                try definition.weakFactory(argumentsSet)
              })
            }
@@ -683,7 +425,7 @@ extension DependencyContainer {
            throw error
          }
            //ignore other errors
-          catch { log(.Errors, error) }
+          catch { log(level: .Errors, error) }
        }
        
        //try to resolve key using auto-wiring
@@ -694,52 +436,12 @@ extension DependencyContainer {
          throw error
        }
          //ignore other errors
-        catch { log(.Errors, error) }
+        catch { log(level: .Errors, error) }
      }
    }
  }
 }

-///Pool to hold instances, created during call to `resolve()`.
-///Before `resolve()` returns pool is drained.
-private class ResolvedInstances {
-  
-  var resolvedInstances = [DefinitionKey: Any]()
-  var resolvableInstances = [Resolvable]()
-  
-  //singletons are stored using reference type wrapper to be able to share them between containers
-  fileprivate var singletonsBox = Box<[DefinitionKey: Any]>([:])
-  var singletons: [DefinitionKey: Any] {
-    get { return singletonsBox.unboxed }
-    set { singletonsBox.unboxed = newValue }
-  }
-  
-  fileprivate var weakSingletonsBox = Box<[DefinitionKey: Any]>([:])
-  var weakSingletons: [DefinitionKey: Any] {
-    get { return weakSingletonsBox.unboxed }
-    set { weakSingletonsBox.unboxed = newValue }
-  }
-  subscript(key key: DefinitionKey, inScope scope: ComponentScope) -> Any? {
-    get {
-      switch scope {
-      case .singleton, .eagerSingleton: return singletons[key]
-      case .weakSingleton: return (weakSingletons[key] as? WeakBoxType)?.unboxed ?? weakSingletons[key]
-      case .shared: return resolvedInstances[key]
-      case .unique: return nil
-      }
-    }
-    set {
-      switch scope {
-      case .singleton, .eagerSingleton: singletons[key] = newValue
-      case .weakSingleton: weakSingletons[key] = newValue
-      case .shared: resolvedInstances[key] = newValue
-      case .unique: break
-      }
-    }
-  }
-  
-}
-
 extension DependencyContainer: CustomStringConvertible {
  
  public var description: String {
@@ -748,22 +450,6 @@ extension DependencyContainer: CustomStringConvertible {
  
 }

-//MARK: - Resolvable
-
-/// Resolvable protocol provides some extension points for resolving dependencies with property injection.
-public protocol Resolvable {
-  /// This method will be called right after instance is created by the container.
-  func resolveDependencies(_ container: DependencyContainer)
-  /// This method will be called when all dependencies of the instance are resolved.
-  /// When resolving objects graph the last resolved instance will receive this callback first.
-  func didResolveDependencies()
-}
-
-public extension Resolvable {
-  func resolveDependencies(_ container: DependencyContainer) { }
-  func didResolveDependencies() { }
-}
-
 //MARK: - DependencyTagConvertible

 /// Implement this protocol on your type if you want to use its instances as `DependencyContainer`'s tags.
@@ -826,85 +512,17 @@ extension DependencyContainer.Tag: ExpressibleByIntegerLiteral {
  
 }

-public func ==(lhs: DependencyContainer.Tag, rhs: DependencyContainer.Tag) -> Bool {
-  switch (lhs, rhs) {
-  case let (.String(lhsString), .String(rhsString)):
-    return lhsString == rhsString
-  case let (.Int(lhsInt), .Int(rhsInt)):
-    return lhsInt == rhsInt
-  default:
-    return false
-  }
-}
+extension DependencyContainer.Tag: Equatable {

-//MARK: - DipError
-
-/**
- Errors thrown by `DependencyContainer`'s methods.
- 
- - seealso: `resolve(tag:)`
-*/
-public enum DipError: Error, CustomStringConvertible {
-  
-  /**
-   Thrown by `resolve(tag:)` if no matching definition was registered in container.
-   
-   - parameter key: definition key used to lookup matching definition
-  */
-  case definitionNotFound(key: DefinitionKey)
-
-  /**
-   Thrown by `resolve(tag:)` if failed to auto-inject required property.
-   
-   - parameters:
-      - label: The name of the property
-      - type: The type of the property
-      - underlyingError: The error that caused auto-injection to fail
-  */
-  case autoInjectionFailed(label: String?, type: Any.Type, underlyingError: Error)
-  
-  /**
-   Thrown by `resolve(tag:)` if failed to auto-wire a type.
-   
-   - parameters:
-      - type: The type that failed to be resolved by auto-wiring
-      - underlyingError: The error that cause auto-wiring to fail
-  */
-  case autoWiringFailed(type: Any.Type, underlyingError: Error)
-  
-  /**
-   Thrown when auto-wiring type if several definitions with the same number of runtime arguments
-   are registered for that type.
-   
-   - parameters:
-      - type: The type that failed to be resolved by auto-wiring
-      - definitions: Ambiguous definitions
-  */
-  case ambiguousDefinitions(type: Any.Type, definitions: [DefinitionType])
-  
-  /**
-   Thrown by `resolve(tag:)` if resolved instance does not implemenet resolved type (i.e. when type-forwarding).
-   
-   - parameters:
-      - resolved: Resolved instance
-      - key: Definition key used to resolve instance
-   */
-  case invalidType(resolved: Any?, key: DefinitionKey)
-  
-  public var description: String {
-    switch self {
-    case let .definitionNotFound(key):
-      return "No definition registered for \(key).\nCheck the tag, type you try to resolve, number, order and types of runtime arguments passed to `resolve()` and match them with registered factories for type \(key.type)."
-    case let .autoInjectionFailed(label, type, error):
-      return "Failed to auto-inject property \"\(label.desc)\" of type \(type). \(error)"
-    case let .autoWiringFailed(type, error):
-      return "Failed to auto-wire type \"\(type)\". \(error)"
-    case let .ambiguousDefinitions(type, definitions):
-      return "Ambiguous definitions for \(type):\n" +
-      definitions.map({ "\($0)" }).joined(separator: ";\n")
-    case let .invalidType(resolved, key):
-      return "Resolved instance \(resolved ?? "nil") does not implement expected type \(key.type)."
+  public static func ==(lhs: DependencyContainer.Tag, rhs: DependencyContainer.Tag) -> Bool {
+    switch (lhs, rhs) {
+    case let (.String(lhsString), .String(rhsString)):
+      return lhsString == rhsString
+    case let (.Int(lhsInt), .Int(rhsInt)):
+      return lhsInt == rhsInt
+    default:
+      return false
    }
  }
-  
+
 }
@@ -0,0 +1,92 @@
+//
+// Dip
+//
+// Copyright (c) 2015 Olivier Halligon <olivier@halligon.net>
+//
+// Permission is hereby granted, free of charge, to any person obtaining a copy
+// of this software and associated documentation files (the "Software"), to deal
+// in the Software without restriction, including without limitation the rights
+// to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+// copies of the Software, and to permit persons to whom the Software is
+// furnished to do so, subject to the following conditions:
+//
+// The above copyright notice and this permission notice shall be included in
+// all copies or substantial portions of the Software.
+//
+// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+// OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+// THE SOFTWARE.
+//
+
+/**
+ Errors thrown by `DependencyContainer`'s methods.
+ 
+ - seealso: `resolve(tag:)`
+ */
+public enum DipError: Error, CustomStringConvertible {
+  
+  /**
+   Thrown by `resolve(tag:)` if no matching definition was registered in container.
+   
+   - parameter key: definition key used to lookup matching definition
+   */
+  case definitionNotFound(key: DefinitionKey)
+  
+  /**
+   Thrown by `resolve(tag:)` if failed to auto-inject required property.
+   
+   - parameters:
+      - label: The name of the property
+      - type: The type of the property
+      - underlyingError: The error that caused auto-injection to fail
+   */
+  case autoInjectionFailed(label: String?, type: Any.Type, underlyingError: Error)
+  
+  /**
+   Thrown by `resolve(tag:)` if failed to auto-wire a type.
+   
+   - parameters:
+      - type: The type that failed to be resolved by auto-wiring
+      - underlyingError: The error that cause auto-wiring to fail
+   */
+  case autoWiringFailed(type: Any.Type, underlyingError: Error)
+  
+  /**
+   Thrown when auto-wiring type if several definitions with the same number of runtime arguments
+   are registered for that type.
+   
+   - parameters:
+      - type: The type that failed to be resolved by auto-wiring
+      - definitions: Ambiguous definitions
+   */
+  case ambiguousDefinitions(type: Any.Type, definitions: [DefinitionType])
+  
+  /**
+   Thrown by `resolve(tag:)` if resolved instance does not implemenet resolved type (i.e. when type-forwarding).
+   
+   - parameters:
+      - resolved: Resolved instance
+      - key: Definition key used to resolve instance
+   */
+  case invalidType(resolved: Any?, key: DefinitionKey)
+  
+  public var description: String {
+    switch self {
+    case let .definitionNotFound(key):
+      return "No definition registered for \(key).\nCheck the tag, type you try to resolve, number, order and types of runtime arguments passed to `resolve()` and match them with registered factories for type \(String(reflecting: key.type))."
+    case let .autoInjectionFailed(label, type, error):
+      return "Failed to auto-inject property \"\(label.desc)\" of type \(String(reflecting: type)). \(error)"
+    case let .autoWiringFailed(type, error):
+      return "Failed to auto-wire type \"\(String(reflecting: type))\". \(error)"
+    case let .ambiguousDefinitions(type, definitions):
+      return "Ambiguous definitions for \(String(reflecting: type)):\n" +
+        definitions.map({ "\($0)" }).joined(separator: ";\n")
+    case let .invalidType(resolved, key):
+      return "Resolved instance \(resolved ?? "nil") does not implement expected type \(String(reflecting: key.type))."
+    }
+  }
+}
@@ -0,0 +1,84 @@
+//
+// Dip
+//
+// Copyright (c) 2015 Olivier Halligon <olivier@halligon.net>
+//
+// Permission is hereby granted, free of charge, to any person obtaining a copy
+// of this software and associated documentation files (the "Software"), to deal
+// in the Software without restriction, including without limitation the rights
+// to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+// copies of the Software, and to permit persons to whom the Software is
+// furnished to do so, subject to the following conditions:
+//
+// The above copyright notice and this permission notice shall be included in
+// all copies or substantial portions of the Software.
+//
+// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+// OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+// THE SOFTWARE.
+//
+
+extension DependencyContainer {
+  /**
+   Registers definition for passed type.
+   
+   If instance created by factory of definition, passed as a first parameter,
+   does not implement type passed in a `type` parameter,
+   container will throw `DipError.DefinitionNotFound` error when trying to resolve that type.
+   
+   - parameters:
+      - definition: Definition to register
+      - type: Type to register definition for
+      - tag: Optional tag to associate definition with. Default is `nil`.
+   
+   - returns: New definition registered for passed type.
+   */
+  @discardableResult public func register<T, U, F>(_ definition: Definition<T, U>, type: F.Type, tag: DependencyTagConvertible? = nil) -> Definition<F, U> {
+    return _register(definition: definition, type: type, tag: tag)
+  }
+
+  /**
+   Register definiton in the container and associate it with an optional tag.
+   Will override already registered definition for the same type and factory, associated with the same tag.
+   
+   - parameters:
+      - tag: The arbitrary tag to associate this definition with. Pass `nil` to associate with any tag. Default value is `nil`.
+      - definition: The definition to register in the container.
+   
+   */
+  public func register<T, U>(_ definition: Definition<T, U>, tag: DependencyTagConvertible? = nil) {
+    _register(definition: definition, tag: tag)
+  }
+
+}
+
+extension DependencyContainer {
+  
+  func _register<T, U>(definition aDefinition: Definition<T, U>, tag: DependencyTagConvertible? = nil) {
+    precondition(!bootstrapped, "You can not modify container's definitions after it was bootstrapped.")
+    let definition = aDefinition
+    threadSafe {
+      let key = DefinitionKey(type: T.self, typeOfArguments: U.self, tag: tag?.dependencyTag)
+      if let _ = definitions[key] {
+        _remove(definitionForKey: key)
+      }
+      
+      definition.container = self
+      definitions[key] = definition
+      resolvedInstances.singletons[key] = nil
+      resolvedInstances.weakSingletons[key] = nil
+      resolvedInstances.sharedSingletons[key] = nil
+      resolvedInstances.sharedWeakSingletons[key] = nil
+      
+      if .eagerSingleton == definition.scope {
+        bootstrapQueue.append({ _ = try self.resolve(tag: tag) as T })
+      }
+    }
+  }
+  
+}
+
@@ -0,0 +1,335 @@
+//
+// Dip
+//
+// Copyright (c) 2015 Olivier Halligon <olivier@halligon.net>
+// 
+// Permission is hereby granted, free of charge, to any person obtaining a copy
+// of this software and associated documentation files (the "Software"), to deal
+// in the Software without restriction, including without limitation the rights
+// to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+// copies of the Software, and to permit persons to whom the Software is
+// furnished to do so, subject to the following conditions:
+// 
+// The above copyright notice and this permission notice shall be included in
+// all copies or substantial portions of the Software.
+// 
+// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+// OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+// THE SOFTWARE.
+//
+
+extension DependencyContainer {
+  
+  /**
+   Resolve an instance of type `T`.
+   
+   If no matching definition was registered with provided `tag`,
+   container will lookup definition associated with `nil` tag.
+   
+   - parameter tag: The arbitrary tag to use to lookup definition.
+   
+   - throws: `DipError.DefinitionNotFound`, `DipError.AutoInjectionFailed`, `DipError.AmbiguousDefinitions`, `DipError.InvalidType`
+   
+   - returns: An instance of type `T`.
+   
+   **Example**:
+   ```swift
+   let service = try! container.resolve() as Service
+   let service = try! container.resolve(tag: "service") as Service
+   let service: Service = try! container.resolve()
+   ```
+   
+   - seealso: `register(_:type:tag:factory:)`
+   */
+  public func resolve<T>(tag: DependencyTagConvertible? = nil) throws -> T {
+    return try _resolve(tag: tag) { (factory: () throws -> T) in try factory() }
+  }
+
+  /**
+   Resolve an instance of requested type. Weakly-typed alternative of `resolve(tag:)`
+   
+   - warning: This method does not make any type checks, so there is no guaranty that
+              resulting instance is actually an instance of requested type.
+              That can happen if you register forwarded type that is not implemented by resolved instance.
+   
+   - parameters:
+      - type: Type to resolve
+      - tag: The arbitrary tag to use to lookup definition.
+   
+   - throws: `DipError.DefinitionNotFound`, `DipError.AutoInjectionFailed`, `DipError.AmbiguousDefinitions`, `DipError.InvalidType`
+   
+   - returns: An instance of requested type.
+
+   **Example**:
+   ```swift
+   let service = try! container.resolve(Service.self) as! Service
+   let service = try! container.resolve(Service.self, tag: "service") as! Service
+   ```
+
+   - seealso: `resolve(tag:)`, `register(_:type:tag:factory:)`
+   */
+  public func resolve(_ type: Any.Type, tag: DependencyTagConvertible? = nil) throws -> Any {
+    return try resolve(type, tag: tag) { (factory: () throws -> Any) in try factory() }
+  }
+  
+  /**
+   Resolve an instance of type `T` using generic builder closure that accepts generic factory and returns created instance.
+   
+   - parameters:
+      - tag: The arbitrary tag to use to lookup definition.
+      - builder: Generic closure that accepts generic factory and returns inctance created by that factory.
+   
+   - throws: `DipError.DefinitionNotFound`, `DipError.AutoInjectionFailed`, `DipError.AmbiguousDefinitions`, `DipError.InvalidType`
+   
+   - returns: An instance of type `T`.
+   
+   - note: You _should not_ call this method directly, instead call any of other 
+           `resolve(tag:)` or `resolve(tag:withArguments:)` methods.
+           You _should_ use this method only to resolve dependency with more runtime arguments than
+           _Dip_ supports (currently it's up to six) like in the following example:
+   
+   ```swift
+   public func resolve<T, A, B, C, ...>(tag: Tag? = nil, _ arg1: A, _ arg2: B, _ arg3: C, ...) throws -> T {
+     return try resolve(tag: tag) { factory in factory(arg1, arg2, arg3, ...) }
+   }
+   ```
+   
+   Though before you do so you should probably review your design and try to reduce the number of dependencies.
+   */
+  public func resolve<T, U>(tag: DependencyTagConvertible? = nil, builder: ((U) throws -> T) throws -> T) throws -> T {
+    return try _resolve(tag: tag, builder: builder)
+  }
+
+  public func resolve<T>(tag: DependencyTagConvertible? = nil, builder: (() throws -> T) throws -> T) throws -> T {
+    return try _resolve(tag: tag, builder: builder)
+  }
+
+  /**
+   Resolve an instance of provided type using builder closure. Weakly-typed alternative of `resolve(tag:builder:)`
+   
+   - seealso: `resolve(tag:builder:)`
+  */
+  public func resolve<U>(_ type: Any.Type, tag: DependencyTagConvertible? = nil, builder: ((U) throws -> Any) throws -> Any) throws -> Any {
+    return try _resolve(type: type, tag: tag, builder: builder)
+  }
+
+  public func resolve(_ type: Any.Type, tag: DependencyTagConvertible? = nil, builder: (() throws -> Any) throws -> Any) throws -> Any {
+    return try _resolve(type: type, tag: tag, builder: builder)
+  }
+
+}
+
+extension DependencyContainer {
+  
+  func _resolve<T>(tag aTag: DependencyTagConvertible? = nil, builder: (() throws -> T) throws -> T) throws -> T {
+    return try resolve(T.self, tag: aTag, builder: { factory in
+      try withoutActuallyEscaping(factory, do: { (factory) throws -> T in
+        try builder({ try factory() as! T })
+      })
+    }) as! T
+  }
+  
+  func _resolve(type aType: Any.Type, tag: DependencyTagConvertible? = nil, builder: (() throws -> Any) throws -> Any) throws -> Any {
+    let key = DefinitionKey(type: aType, typeOfArguments: Void.self, tag: tag?.dependencyTag)
+    
+    return try inContext(key:key, injectedInType: context?.resolvingType) {
+      try self._resolve(key: key, builder: { definition in
+        try builder { try definition.weakFactory(()) }
+      })
+    }
+  }
+  
+  func _resolve<T, U>(tag aTag: DependencyTagConvertible? = nil, builder: ((U) throws -> T) throws -> T) throws -> T {
+    return try resolve(T.self, tag: aTag, builder: { factory in
+      try withoutActuallyEscaping(factory, do: { (factory) throws -> T in
+        try builder({ try factory($0) as! T })
+      })
+    }) as! T
+  }
+  
+  func _resolve<U>(type aType: Any.Type, tag: DependencyTagConvertible? = nil, builder: ((U) throws -> Any) throws -> Any) throws -> Any {
+    let key = DefinitionKey(type: aType, typeOfArguments: U.self, tag: tag?.dependencyTag)
+    
+    return try inContext(key:key, injectedInType: context?.resolvingType) {
+      try self._resolve(key: key, builder: { definition in
+        try builder(definition.weakFactory)
+      })
+    }
+  }
+  
+  /// Lookup definition by the key and use it to resolve instance. Fallback to the key with `nil` tag.
+  func _resolve<T>(key aKey: DefinitionKey, builder: (_Definition) throws -> T) throws -> T {
+    guard let matching = self.definition(matching: aKey) else {
+      do {
+        return try autowire(key: aKey)
+      } catch {
+        if let resolved = collaboratingResolve(key: aKey, builder: builder) {
+          return resolved
+        } else {
+          throw error
+        }
+      }
+    }
+    
+    let (key, definition) = matching
+    
+    //first search for already resolved instance for this type or any of forwarding types
+    if let previouslyResolved: T = previouslyResolved(for: definition, key: key) {
+      log(level: .Verbose, "Reusing previously resolved instance \(previouslyResolved)")
+      return previouslyResolved
+    }
+    
+    if let context = context { log(level: .Verbose, context) }
+    var resolvedInstance = try builder(definition)
+    
+    /*
+     Strongly-typed `resolve(tag:builder:)` calls weakly-typed `resolve(_:tag:builder:)`,
+     so `T` will be `Any` at runtime, erasing type information when this method returns.
+     When we try to cast result of `Any` to generic type T Swift fails to cast it.
+     The same happens in the following code snippet:
+     
+     let optService: Service? = ServiceImp()
+     let anyService: Any = optService
+     let service: Service = anyService as! Service
+     
+     That happens because when Optional is casted to Any Swift can not implicitly unwrap it with as operator.
+     As a workaround we detect boxing here and unwrap it so that we return not a box, but wrapped instance.
+     */
+    if let box = resolvedInstance as? BoxType, let unboxedAny = box.unboxed, let unboxed = unboxedAny as? T {
+      resolvedInstance = unboxed
+    }
+    
+    //when builder calls factory it will in turn resolve sub-dependencies (if there are any)
+    //when it returns instance that we try to resolve here can be already resolved
+    //so we return it, throwing away instance created by previous call to builder
+    if let previouslyResolved: T = previouslyResolved(for: definition, key: key) {
+      log(level: .Verbose, "Reusing previously resolved instance \(previouslyResolved)")
+      return previouslyResolved
+    }
+    
+    resolvedInstances[key: key, inScope: definition.scope, context: context] = resolvedInstance
+    
+    if let resolvable = resolvedInstance as? Resolvable {
+      resolvedInstances.resolvableInstances.append(resolvable)
+      resolvable.resolveDependencies(self)
+    }
+
+    let shouldAutoInject = definition.autoInjectProperties ?? self.autoInjectProperties
+    if shouldAutoInject {
+      try autoInjectProperties(in: resolvedInstance)
+    }
+    try definition.resolveProperties(of: resolvedInstance, container: self)
+    
+    log(level: .Verbose, "Resolved type \(key.type) with \(resolvedInstance)")
+    return resolvedInstance
+  }
+  
+  private func previouslyResolved<T>(for definition: _Definition, key: DefinitionKey) -> T? {
+    //first check if exact key was already resolved
+    if let previouslyResolved: T = resolvedInstances[key: key, inScope: definition.scope, context: context] {
+      return previouslyResolved
+    }
+    //then check if any related type was already resolved
+    let keys = definition.implementingTypes.map({
+      DefinitionKey(type: $0, typeOfArguments: key.typeOfArguments, tag: key.tag)
+    })
+    for key in keys {
+      if let previouslyResolved: T = resolvedInstances[key: key, inScope: definition.scope, context: context] {
+        return previouslyResolved
+      }
+    }
+    return nil
+  }
+  
+  /// Searches for definition that matches provided key
+  func definition(matching key: DefinitionKey) -> KeyDefinitionPair? {
+    if let definition = (self.definitions[key] ?? self.definitions[key.tagged(with: nil)]) {
+      return (key, definition)
+    }
+    
+    //if no definition registered for exact type try to find type-forwarding definition that can resolve the type
+    //that will actually happen only when resolving optionals
+    if definitions.filter({ $0.0.type == key.type }).isEmpty {
+      return typeForwardingDefinition(forKey: key)
+    }
+    return nil
+  }
+  
+}
+
+///Pool to hold instances, created during call to `resolve()`.
+///Before `resolve()` returns pool is drained.
+class ResolvedInstances {
+  
+  var resolvedInstances = [DefinitionKey: Any]()
+  var resolvableInstances = [Resolvable]()
+  
+  //singletons are stored using reference type wrapper to be able to share them between containers
+  var sharedSingletonsBox = Box<[DefinitionKey: Any]>([:])
+  var sharedSingletons: [DefinitionKey: Any] {
+    get { return sharedSingletonsBox.unboxed }
+    set { sharedSingletonsBox.unboxed = newValue }
+  }
+  var singletons = [DefinitionKey: Any]()
+  
+  var sharedWeakSingletonsBox = Box<[DefinitionKey: Any]>([:])
+  var sharedWeakSingletons: [DefinitionKey: Any] {
+    get { return sharedWeakSingletonsBox.unboxed }
+    set { sharedWeakSingletonsBox.unboxed = newValue }
+  }
+  var weakSingletons = [DefinitionKey: Any]()
+  
+  subscript<T>(key key: DefinitionKey, inScope scope: ComponentScope, context context: DependencyContainer.Context) -> T? {
+    get {
+      let instance: Any?
+      switch scope {
+      case .singleton, .eagerSingleton:
+        instance = context.inCollaboration ? sharedSingletons[key] : singletons[key]
+      case .weakSingleton:
+        let singletons = context.inCollaboration ? sharedWeakSingletons : weakSingletons
+        if let boxed = singletons[key] as? WeakBoxType { instance = boxed.unboxed }
+        else { instance = singletons[key] }
+      case .shared:
+        instance = resolvedInstances[key]
+      case .unique:
+        return nil
+      }
+      return instance.flatMap { $0 as? T }
+    }
+    set {
+      switch scope {
+      case .singleton, .eagerSingleton:
+        sharedSingletons[key] = newValue
+        singletons[key] = newValue
+      case .weakSingleton:
+        sharedWeakSingletons[key] = newValue
+        weakSingletons[key] = newValue
+      case .shared:
+        resolvedInstances[key] = newValue
+      case .unique:
+        break
+      }
+    }
+  }
+  
+}
+
+//MARK: - Resolvable
+
+/// Resolvable protocol provides some extension points for resolving dependencies with property injection.
+public protocol Resolvable {
+  /// This method will be called right after instance is created by the container.
+  func resolveDependencies(_ container: DependencyContainer)
+  /// This method will be called when all dependencies of the instance are resolved.
+  /// When resolving objects graph the last resolved instance will receive this callback first.
+  func didResolveDependencies()
+}
+
+extension Resolvable {
+  func resolveDependencies(_ container: DependencyContainer) {}
+  func didResolveDependencies() {}
+}
@@ -22,10 +22,95 @@
 // THE SOFTWARE.
 //

-// MARK: - Register/resolve dependencies with runtime arguments
-
 extension DependencyContainer {
  
+  /**
+   Register factory for type `T` and associate it with an optional tag.
+   
+   - parameters:
+      - scope: The scope to use for instance created by the factory. Default value is `Shared`.
+      - type: Type to register definition for. Default value is return value of factory.
+      - tag: The arbitrary tag to associate this factory with. Pass `nil` to associate with any tag. Default value is `nil`.
+      - factory: The factory that produces instance of `type`. Will be used to resolve instances of `type`.
+   
+   - returns: A registered definition.
+   
+   - note: You should cast the factory return type to the protocol you want to register it for
+           (unless you want to register concrete type) or provide `type` parameter.
+   
+   - seealso: `Definition`, `ComponentScope`, `DependencyTagConvertible`
+   
+   **Example**:
+   ```swift
+   //Register ServiceImp as Service
+   container.register { ServiceImp() as Service }
+   
+   //Register ServiceImp as Service named by "service"
+   container.register(tag: "service") { ServiceImp() as Service }
+   
+   //Register unique ServiceImp as Service
+   container.register(.unique) { ServiceImp() as Service }
+   
+   //Register ClientImp as Client and resolve it's service dependency
+   container.register { try ClientImp(service: container.resolve() as Service) as Client }
+   
+   //Register ServiceImp as concrete type
+   container.register { ServiceImp() }
+   container.register(factory: ServiceImp.init)
+   
+   //Register ServiceImp as Service
+   container.register(Service.self, factory: ServiceImp.init)
+   
+   //Register ClientImp as Client
+   container.register(Client.self, factory: ClientImp.init(service:))
+   ```
+   */
+  @discardableResult public func register<T>(_ scope: ComponentScope = .shared, type: T.Type = T.self, tag: DependencyTagConvertible? = nil, factory: @escaping (()) throws -> T) -> Definition<T, ()> {
+    let definition = DefinitionBuilder<T, ()> {
+      $0.scope = scope
+      $0.factory = factory
+      }.build()
+    register(definition, tag: tag)
+    return definition
+  }
+  
+  /**
+   Register generic factory and auto-wiring factory and associate it with an optional tag.
+   
+   - parameters:
+      - tag: The arbitrary tag to associate this factory with. Pass `nil` to associate with any tag. Default value is `nil`.
+      - scope: The scope to use for instance created by the factory.
+      - factory: The factory to register.
+      - numberOfArguments: The number of factory arguments. Will be used on auto-wiring to sort definitions.
+      - autoWiringFactory: The factory to be used on auto-wiring to resolve component.
+   
+   - returns: A registered definition.
+   
+   - note: You _should not_ call this method directly, instead call any of other `register` methods.
+           You _should_ use this method only to register dependency with more runtime arguments
+           than _Dip_ supports (currently it's up to six) like in the following example:
+   
+   ```swift
+   public func register<T, A, B, C, ...>(_ scope: ComponentScope = .shared, type: T.Type = T.self, tag: Tag? = nil, factory: (A, B, C, ...) throws -> T) -> Definition<T, (A, B, C, ...)> {
+     return register(scope: scope, type: type, tag: tag, factory: factory, numberOfArguments: ...) { container, tag in
+       try factory(container.resolve(tag: tag), ...)
+     }
+   }
+   ```
+   
+   Though before you do so you should probably review your design and try to reduce number of depnedencies.
+   */
+  public func register<T, U>(scope: ComponentScope, type: T.Type, tag: DependencyTagConvertible?, factory: @escaping (U) throws -> T, numberOfArguments: Int, autoWiringFactory: @escaping (DependencyContainer, Tag?) throws -> T) -> Definition<T, U> {
+    let definition = DefinitionBuilder<T, U> {
+      $0.scope = scope
+      $0.factory = factory
+      $0.numberOfArguments = numberOfArguments
+      $0.autoWiringFactory = autoWiringFactory
+      }.build()
+    register(definition, tag: tag)
+    return definition
+  }
+  
  // MARK: 1 Runtime Argument
  
  /**
@@ -33,7 +118,7 @@ extension DependencyContainer {

  - note: You can have several factories with different number or types of arguments registered for same type,
          optionally associated with some tags. When container resolves that type it matches the type,
-          __number__, __types__ and __order__ of runtime arguments and optional tag that you pass to `resolve(tag:withArguments:)` method.
+          __number__, __types__ and __order__ of runtime arguments and optional tag that you pass to `resolve(tag:arguments:)` method.

  - parameters:
    - tag: The arbitrary tag to associate this factory with. Pass `nil` to associate with any tag. Default value is `nil`.
@@ -42,7 +127,7 @@ extension DependencyContainer {
  
  - seealso: `register(_:type:tag:factory:)`
  */
-  @discardableResult public func register<T, A>(_ scope: ComponentScope = .shared, type: T.Type = T.self, tag: DependencyTagConvertible? = nil, factory: @escaping (A) throws -> T) -> Definition<T, A> {
+  @discardableResult public func register<T, A>(_ scope: ComponentScope = .shared, type: T.Type = T.self, tag: DependencyTagConvertible? = nil, factory: @escaping ((A)) throws -> T) -> Definition<T, A> {
    return register(scope: scope, type: type, tag: tag, factory: factory, numberOfArguments: 1) { container, tag in try factory(container.resolve(tag: tag)) }
  }

@@ -68,13 +153,13 @@ extension DependencyContainer {

   - returns: An instance of type `T`.

-   - seealso: `register(tag:_:factory:)`, `resolve(tag:builder:)`
+   - seealso: `register(_:type:tag:factory:)`, `resolve(tag:builder:)`
   */
  public func resolve<T, A>(tag: DependencyTagConvertible? = nil, arguments arg1: A) throws -> T {
    return try resolve(tag: tag) { factory in try factory(arg1) }
  }

-  ///- seealso: `resolve(_:tag:)`, `resolve(tag:withArguments:)`
+  ///- seealso: `resolve(_:tag:)`, `resolve(tag:arguments:)`
  public func resolve<A>(_ type: Any.Type, tag: DependencyTagConvertible? = nil, arguments arg1: A) throws -> Any {
    return try resolve(type, tag: tag) { factory in try factory(arg1) }
  }
@@ -82,84 +167,85 @@ extension DependencyContainer {
  // MARK: 2 Runtime Arguments
  
  /// - seealso: `register(_:type:tag:factory:)`
-  @discardableResult public func register<T, A, B>(_ scope: ComponentScope = .shared, type: T.Type = T.self, tag: DependencyTagConvertible? = nil, factory: @escaping (A, B) throws -> T) -> Definition<T, (A, B)> {
-    return register(scope: scope, type: type, tag: tag, factory: factory, numberOfArguments: 2) { container, tag in try factory(container.resolve(tag: tag), container.resolve(tag: tag)) }
+  @discardableResult public func register<T, A, B>(_ scope: ComponentScope = .shared, type: T.Type = T.self, tag: DependencyTagConvertible? = nil, factory: @escaping ((A, B)
+    ) throws -> T) -> Definition<T, (A, B)> {
+    return register(scope: scope, type: type, tag: tag, factory: factory, numberOfArguments: 2) { container, tag in try factory((container.resolve(tag: tag), container.resolve(tag: tag))) }
  }

-  /// - seealso: `resolve(tag:withArguments:)`
+  /// - seealso: `resolve(tag:arguments:)`
  public func resolve<T, A, B>(tag: DependencyTagConvertible? = nil, arguments arg1: A, _ arg2: B) throws -> T {
-    return try resolve(tag: tag) { factory in try factory(arg1, arg2) }
+    return try resolve(T.self, tag: tag) { factory in try factory((arg1, arg2)) } as! T
  }
  
-  ///- seealso: `resolve(_:tag:)`, `resolve(tag:withArguments:)`
+  ///- seealso: `resolve(_:tag:)`, `resolve(tag:arguments:)`
  public func resolve<A, B>(_ type: Any.Type, tag: DependencyTagConvertible? = nil, arguments arg1: A, _ arg2: B) throws -> Any {
    return try resolve(type, tag: tag) { factory in try factory((arg1, arg2)) }
  }
  
  // MARK: 3 Runtime Arguments
  
-  /// - seealso: `register(tag:scope:factory:)`
-  @discardableResult public func register<T, A, B, C>(_ scope: ComponentScope = .shared, type: T.Type = T.self, tag: DependencyTagConvertible? = nil, factory: @escaping (A, B, C) throws -> T) -> Definition<T, (A, B, C)> {
-    return register(scope: scope, type: type, tag: tag, factory: factory, numberOfArguments: 3)  { container, tag in try factory(container.resolve(tag: tag), container.resolve(tag: tag), container.resolve(tag: tag)) }
+  /// - seealso: `register(_:type:tag:factory:)`
+  @discardableResult public func register<T, A, B, C>(_ scope: ComponentScope = .shared, type: T.Type = T.self, tag: DependencyTagConvertible? = nil, factory: @escaping ((A, B, C)) throws -> T) -> Definition<T, (A, B, C)> {
+    return register(scope: scope, type: type, tag: tag, factory: factory, numberOfArguments: 3)  { container, tag in try factory((container.resolve(tag: tag), container.resolve(tag: tag), container.resolve(tag: tag))) }
  }

-  /// - seealso: `resolve(tag:withArguments:)`
+  /// - seealso: `resolve(tag:arguments:)`
  public func resolve<T, A, B, C>(tag: DependencyTagConvertible? = nil, arguments arg1: A, _ arg2: B, _ arg3: C) throws -> T {
-    return try resolve(tag: tag) { factory in try factory(arg1, arg2, arg3) }
+    return try resolve(T.self, tag: tag) { factory in try factory((arg1, arg2, arg3)) } as! T
  }
  
-  ///- seealso: `resolve(_:tag:)`, `resolve(tag:withArguments:)`
+  ///- seealso: `resolve(_:tag:)`, `resolve(tag:arguments:)`
  public func resolve<A, B, C>(_ type: Any.Type, tag: DependencyTagConvertible? = nil, arguments arg1: A, _ arg2: B, _ arg3: C) throws -> Any {
    return try resolve(type, tag: tag) { factory in try factory((arg1, arg2, arg3)) }
  }

  // MARK: 4 Runtime Arguments
  
-  /// - seealso: `register(tag:scope:factory:)`
-  @discardableResult public func register<T, A, B, C, D>(_ scope: ComponentScope = .shared, type: T.Type = T.self, tag: DependencyTagConvertible? = nil, factory: @escaping (A, B, C, D) throws -> T) -> Definition<T, (A, B, C, D)> {
-    return register(scope: scope, type: type, tag: tag, factory: factory, numberOfArguments: 4) { container, tag in try factory(container.resolve(tag: tag),  container.resolve(tag: tag), container.resolve(tag: tag), container.resolve(tag: tag)) }
+  /// - seealso: `register(_:type:tag:factory:)`
+  @discardableResult public func register<T, A, B, C, D>(_ scope: ComponentScope = .shared, type: T.Type = T.self, tag: DependencyTagConvertible? = nil, factory: @escaping ((A, B, C, D)) throws -> T) -> Definition<T, (A, B, C, D)> {
+    return register(scope: scope, type: type, tag: tag, factory: factory, numberOfArguments: 4) { container, tag in try factory((container.resolve(tag: tag),  container.resolve(tag: tag), container.resolve(tag: tag), container.resolve(tag: tag))) }
  }

-  /// - seealso: `resolve(tag:withArguments:)`
+  /// - seealso: `resolve(tag:arguments:)`
  public func resolve<T, A, B, C, D>(tag: DependencyTagConvertible? = nil, arguments arg1: A, _ arg2: B, _ arg3: C, _ arg4: D) throws -> T {
-    return try resolve(tag: tag) { factory in try factory(arg1, arg2, arg3, arg4) }
+    return try resolve(T.self, tag: tag) { factory in try factory((arg1, arg2, arg3, arg4)) } as! T
  }

-  /// - seealso: `resolve(_:tag:)`, `resolve(tag:withArguments:)`
+  /// - seealso: `resolve(_:tag:)`, `resolve(tag:arguments:)`
  public func resolve<A, B, C, D>(_ type: Any.Type, tag: DependencyTagConvertible? = nil, arguments arg1: A, _ arg2: B, _ arg3: C, _ arg4: D) throws -> Any {
    return try resolve(type, tag: tag) { factory in try factory((arg1, arg2, arg3, arg4)) }
  }

  // MARK: 5 Runtime Arguments
  
-  /// - seealso: `register(tag:scope:factory:)`
-  @discardableResult public func register<T, A, B, C, D, E>(_ scope: ComponentScope = .shared, type: T.Type = T.self, tag: DependencyTagConvertible? = nil, factory: @escaping (A, B, C, D, E) throws -> T) -> Definition<T, (A, B, C, D, E)> {
-    return register(scope: scope, type: type, tag: tag, factory: factory, numberOfArguments: 5) { container, tag in try factory(container.resolve(tag: tag), container.resolve(tag: tag), container.resolve(tag: tag), container.resolve(tag: tag), container.resolve(tag: tag)) }
+  /// - seealso: `register(_:type:tag:factory:)`
+  @discardableResult public func register<T, A, B, C, D, E>(_ scope: ComponentScope = .shared, type: T.Type = T.self, tag: DependencyTagConvertible? = nil, factory: @escaping ((A, B, C, D, E)) throws -> T) -> Definition<T, (A, B, C, D, E)> {
+    return register(scope: scope, type: type, tag: tag, factory: factory, numberOfArguments: 5) { container, tag in try factory((container.resolve(tag: tag), container.resolve(tag: tag), container.resolve(tag: tag), container.resolve(tag: tag), container.resolve(tag: tag))) }
  }

-  /// - seealso: `resolve(tag:withArguments:)`
+  /// - seealso: `resolve(tag:arguments:)`
  public func resolve<T, A, B, C, D, E>(tag: DependencyTagConvertible? = nil, arguments arg1: A, _ arg2: B, _ arg3: C, _ arg4: D, _ arg5: E) throws -> T {
-    return try resolve(tag: tag) { factory in try factory(arg1, arg2, arg3, arg4, arg5) }
+    return try resolve(T.self, tag: tag) { factory in try factory((arg1, arg2, arg3, arg4, arg5)) } as! T
  }

-  ///- seealso: `resolve(_:tag:)`, `resolve(tag:withArguments:)`
+  ///- seealso: `resolve(_:tag:)`, `resolve(tag:arguments:)`
  public func resolve<A, B, C, D, E>(_ type: Any.Type, tag: DependencyTagConvertible? = nil, arguments arg1: A, _ arg2: B, _ arg3: C, _ arg4: D, _ arg5: E) throws -> Any {
    return try resolve(type, tag: tag) { factory in try factory((arg1, arg2, arg3, arg4, arg5)) }
  }

  // MARK: 6 Runtime Arguments
  
-  /// - seealso: `register(tag:scope:factory:)`
-  @discardableResult public func register<T, A, B, C, D, E, F>(_ scope: ComponentScope = .shared, type: T.Type = T.self, tag: DependencyTagConvertible? = nil, factory: @escaping (A, B, C, D, E, F) throws -> T) -> Definition<T, (A, B, C, D, E, F)> {
-    return register(scope: scope, type: type, tag: tag, factory: factory, numberOfArguments: 6) { container, tag in try factory(container.resolve(tag: tag), container.resolve(tag: tag), container.resolve(tag: tag), container.resolve(tag: tag), container.resolve(tag: tag), container.resolve(tag: tag)) }
+  /// - seealso: `register(_:type:tag:factory:)`
+  @discardableResult public func register<T, A, B, C, D, E, F>(_ scope: ComponentScope = .shared, type: T.Type = T.self, tag: DependencyTagConvertible? = nil, factory: @escaping ((A, B, C, D, E, F)) throws -> T) -> Definition<T, (A, B, C, D, E, F)> {
+    return register(scope: scope, type: type, tag: tag, factory: factory, numberOfArguments: 6) { container, tag in try factory((container.resolve(tag: tag), container.resolve(tag: tag), container.resolve(tag: tag), container.resolve(tag: tag), container.resolve(tag: tag), container.resolve(tag: tag))) }
  }

-  /// - seealso: `resolve(tag:withArguments:)`
+  /// - seealso: `resolve(tag:arguments:)`
  public func resolve<T, A, B, C, D, E, F>(tag: DependencyTagConvertible? = nil, arguments arg1: A, _ arg2: B, _ arg3: C, _ arg4: D, _ arg5: E, _ arg6: F) throws -> T {
-    return try resolve(tag: tag) { factory in try factory(arg1, arg2, arg3, arg4, arg5, arg6) }
+    return try resolve(T.self, tag: tag) { factory in try factory((arg1, arg2, arg3, arg4, arg5, arg6)) } as! T
  }

-  /// - seealso: `resolve(_:tag:)`, `resolve(tag:withArguments:)`
+  /// - seealso: `resolve(_:tag:)`, `resolve(tag:arguments:)`
  public func resolve<A, B, C, D, E, F>(_ type: Any.Type, tag: DependencyTagConvertible? = nil, arguments arg1: A, _ arg2: B, _ arg3: C, _ arg4: D, _ arg5: E, _ arg6: F) throws -> Any {
    return try resolve(type, tag: tag) { factory in try factory((arg1, arg2, arg3, arg4, arg5, arg6)) }
  }
@@ -0,0 +1,245 @@
+//
+// DipUI
+//
+// Copyright (c) 2016 Ilya Puchka <ilyapuchka@gmail.com>
+//
+// Permission is hereby granted, free of charge, to any person obtaining a copy
+// of this software and associated documentation files (the "Software"), to deal
+// in the Software without restriction, including without limitation the rights
+// to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+// copies of the Software, and to permit persons to whom the Software is
+// furnished to do so, subject to the following conditions:
+//
+// The above copyright notice and this permission notice shall be included in
+// all copies or substantial portions of the Software.
+//
+// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+// OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+// THE SOFTWARE.
+//
+
+#if (canImport(UIKit) || canImport(AppKit) || canImport(WatchKit))
+
+extension DependencyContainer {
+  ///Containers that will be used to resolve dependencies of instances, created by stroyboards.
+  static public var uiContainers: [DependencyContainer] = {
+    #if os(watchOS)
+      swizzleAwakeWithContext
+    #endif
+    return []
+  }()
+  
+  /**
+   Resolves dependencies of passed in instance.
+   Use this method to resolve dependencies of object created by storyboard.
+   The type of the instance should be registered in the container.
+   
+   You should call this method only from implementation of `didInstantiateFromStoryboard(_:tag:)`
+   of `StoryboardInstantiatable` protocol if you override its default implementation.
+   
+   This method will do the same as `resolve(tag:) as T`, but instead of creating 
+   a new intance with a registered factory it will use passed in instance as a resolved instance.
+   
+   - parameters:
+      - instance: The object which dependencies should be resolved
+      - tag: An optional tag used to register the type (`T`) in the container
+   
+   **Example**:
+   
+   ```swift
+   class ViewController: UIViewController, ServiceDelegate, StoryboardInstantiatable {
+     var service: Service?
+
+     func didInstantiateFromStoryboard(_ container: DependencyContainer, tag: DependencyContainer.Tag?) throws {
+       try container.resolveDependencies(of: self as ServiceDelegate, tag: "vc")
+     }
+   }
+   
+   class ServiceImp: Service {
+     weak var delegate: ServiceDelegate?
+   }
+   
+   container.register(tag: "vc") { ViewController() }
+     .resolvingProperties { container, controller in
+       controller.service = try container.resolve() as Service
+       controller.service.delegate = controller
+     }
+   
+   container.register { ServiceImp() as Service }
+   ```
+   
+   - seealso: `register(_:type:tag:factory:)`, `didInstantiateFromStoryboard(_:tag:)`
+   
+   */
+  public func resolveDependencies<T>(of instance: T, tag: Tag? = nil) throws {
+    _ = try resolve(tag: tag) { (_: () throws -> T) in instance }
+  }
+  
+  /**
+   Register storyboard type `T` which has to conform to `StoryboardInstantiatable` and associate it with an optional tag.
+   
+   - parameters:
+      - type: Storyboard type to register definition for.
+      - tag: The arbitrary tag to associate this factory with. Pass `nil` to associate with any tag. Default value is `nil`.
+   
+   - returns: A registered definition.
+   
+   - note: This method will register concrete types. If you need to register 
+           as abstract types you should use standard `register` method from Dip.
+           You should cast the factory return type to the protocol you want to 
+           register it for (unless you want to register concrete type) or 
+           provide `type` parameter.
+   
+   - seealso: `Definition`, `ComponentScope`, `DependencyTagConvertible`
+   
+   **Example**:
+   ```swift
+   // Register MyViewController
+   container.register(storyboardType: MyViewController.self)
+   // or
+   container.register(tag: "myVC") { MyViewController() as MyViewControllerType }
+   ```
+   */
+  public func register<T: NSObject>(storyboardType type: T.Type, tag: DependencyTagConvertible? = nil) -> Dip.Definition<T, ()> where T: StoryboardInstantiatable {
+    return register(.unique, type: type, tag: tag, factory: { T() })
+  }
+
+}
+
+#if os(watchOS)
+  public protocol StoryboardInstantiatableType {}
+#else
+  public typealias StoryboardInstantiatableType = NSObjectProtocol
+#endif
+
+public protocol StoryboardInstantiatable: StoryboardInstantiatableType {
+
+  /**
+   This method will be called if you set a `dipTag` attirbute on the object in a storyboard
+   that conforms to `StoryboardInstantiatable` protocol.
+   
+   - parameters:
+      - tag: The tag value, that was set on the object in a storyboard
+      - container: The `DependencyContainer` associated with storyboards
+   
+   The type that implements `StoryboardInstantiatable` protocol should be registered in `UIStoryboard.container`.
+   Default implementation of that method calls `resolveDependenciesOf(_:tag:)`
+   and pass it `self` instance and the tag.
+   
+   Usually you will not need to override the default implementation of this method
+   if you registered the type of the instance as a concrete type in the container.
+   Then you only need to add conformance to `StoryboardInstantiatable`.
+   
+   You may want to override it if you want to add custom logic before/after resolving dependencies
+   or you want to resolve the instance as implementation of some protocol which it conforms to.
+   
+   - warning: This method will be called after `init?(coder:)` but before `awakeFromNib` method of `NSObject`.
+              On watchOS this method will be called before `awakeWithContext(_:)`.
+   
+   **Example**:
+   
+   ```swift
+   extension MyViewController: SomeProtocol { ... }
+   
+   extension MyViewController: StoryboardInstantiatable {
+     func didInstantiateFromStoryboard(_ container: DependencyContainer, tag: DependencyContainer.Tag) throws {
+       //resolve dependencies of the instance as SomeProtocol type
+       try container.resolveDependencies(of: self as SomeProtocol, tag: tag)
+       //do some additional setup here
+     }
+   }
+   ```
+  */
+  func didInstantiateFromStoryboard(_ container: DependencyContainer, tag: DependencyContainer.Tag?) throws
+  
+}
+
+extension StoryboardInstantiatable {
+  public func didInstantiateFromStoryboard(_ container: DependencyContainer, tag: DependencyContainer.Tag?) throws {
+    try container.resolveDependencies(of: self, tag: tag)
+  }
+}
+
+#if os(iOS) || os(tvOS) || os(OSX)
+  
+#if os(iOS) || os(tvOS)
+  import UIKit
+#elseif os(OSX)
+  import AppKit
+#endif
+  
+let DipTagAssociatedObjectKey = UnsafeMutablePointer<Int8>.allocate(capacity: 1)
+
+extension NSObject {
+  
+  ///A string tag that will be used to resolve dependencies of this instance
+  ///if it implements `StoryboardInstantiatable` protocol.
+  @objc private(set) public var dipTag: String? {
+    get {
+      return objc_getAssociatedObject(self, DipTagAssociatedObjectKey) as? String
+    }
+    set {
+      objc_setAssociatedObject(self, DipTagAssociatedObjectKey, newValue, .OBJC_ASSOCIATION_COPY_NONATOMIC)
+      guard let instantiatable = self as? StoryboardInstantiatable else { return }
+      
+      let tag = dipTag.map(DependencyContainer.Tag.String)
+      
+      for (index, container) in DependencyContainer.uiContainers.enumerated() {
+        do {
+          log("Trying to resolve \(type(of: self)) with UI container at index \(index)")
+          try instantiatable.didInstantiateFromStoryboard(container, tag: tag)
+          log("Resolved \(type(of: self))")
+          return
+        } catch { }
+      }
+    }
+  }
+  
+}
+  
+func log(_ message: Any) {
+  if Dip.LogLevel.Errors.rawValue <= Dip.logLevel.rawValue {
+    Dip.logger(logLevel, message)
+  }
+}
+
+#else
+import WatchKit
+  
+let swizzleAwakeWithContext: Void = {
+  let originalSelector = #selector(WKInterfaceController.awake(withContext:))
+  let swizzledSelector = #selector(WKInterfaceController.dip_awake(withContext:))
+  
+  guard let originalMethod = class_getInstanceMethod(WKInterfaceController.self, originalSelector),
+    let swizzledMethod = class_getInstanceMethod(WKInterfaceController.self, swizzledSelector) else { return }
+  
+  let didAddMethod = class_addMethod(WKInterfaceController.self, originalSelector, method_getImplementation(swizzledMethod), method_getTypeEncoding(swizzledMethod))
+  
+  if didAddMethod {
+    class_replaceMethod(WKInterfaceController.self, swizzledSelector, method_getImplementation(originalMethod), method_getTypeEncoding(originalMethod))
+  } else {
+    method_exchangeImplementations(originalMethod, swizzledMethod)
+  }
+}()
+  
+extension WKInterfaceController: StoryboardInstantiatableType {
+
+  @objc func dip_awake(withContext context: AnyObject?) {
+    defer { self.dip_awake(withContext: context) }
+    guard let instantiatable = self as? StoryboardInstantiatable else { return }
+    
+    for container in DependencyContainer.uiContainers {
+      guard let _ = try? instantiatable.didInstantiateFromStoryboard(container, tag: nil) else { continue }
+      break
+    }
+  }
+  
+}
+
+#endif
+
+#endif
@@ -24,7 +24,7 @@

 protocol TypeForwardingDefinition: DefinitionType {
  var implementingTypes: [Any.Type] { get }
-  func doesImplements(_ type: Any.Type) -> Bool
+  func doesImplements(type aType: Any.Type) -> Bool
 }

 extension Definition {
@@ -82,29 +82,16 @@ extension Definition {
  }

  ///Registers definition for types passed as parameters
-  @discardableResult public func implements<A, B, C, D>(_ a: A.Type, _ b: B.Type, c: C.Type, d: D.Type) -> Definition {
+  @discardableResult public func implements<A, B, C, D>(_ a: A.Type, _ b: B.Type, _ c: C.Type, _ d: D.Type) -> Definition {
    return implements(a).implements(b).implements(c).implements(d)
  }
-
+  
 }

 extension DependencyContainer {
  
-  /**
-   Registers definition for passed type.
-   
-   If instance created by factory of definition, passed as a first parameter,
-   does not implement type passed in a `type` parameter,
-   container will throw `DipError.DefinitionNotFound` error when trying to resolve that type.
-   
-   - parameters:
-      - definition: Definition to register
-      - type: Type to register definition for
-      - tag: Optional tag to associate definition with. Default is `nil`.
-   
-   - returns: New definition registered for passed type.
-   */
-  @discardableResult public func register<T, U, F>(_ definition: Definition<T, U>, type: F.Type, tag: DependencyTagConvertible? = nil) -> Definition<F, U> {
+  func _register<T, U, F>(definition aDefinition: Definition<T, U>, type: F.Type, tag: DependencyTagConvertible? = nil) -> Definition<F, U> {
+    let definition = aDefinition
    precondition(definition.container === self, "Definition should be registered in the container.")
    
    let key = DefinitionKey(type: F.self, typeOfArguments: U.self)
@@ -119,7 +106,7 @@ extension DependencyContainer {
          return resolved
        }
        else {
-          throw DipError.invalidType(resolved: resolved, key: key.tagged(self.context.tag))
+          throw DipError.invalidType(resolved: resolved, key: key.tagged(with: self.context.tag))
        }
      }

@@ -131,7 +118,7 @@ extension DependencyContainer {
            return resolved
          }
          else {
-            throw DipError.invalidType(resolved: resolved, key: key.tagged(self.context.tag))
+            throw DipError.invalidType(resolved: resolved, key: key.tagged(with: self.context.tag))
          }
        }
      })
@@ -143,14 +130,14 @@ extension DependencyContainer {
  }
  
  /// Searches for definition that forwards requested type
-  func typeForwardingDefinition(_ key: DefinitionKey) -> KeyDefinitionPair? {
+  func typeForwardingDefinition(forKey key: DefinitionKey) -> KeyDefinitionPair? {
    var forwardingDefinitions = self.definitions.map({ (key: $0.0, definition: $0.1) })
    
-    forwardingDefinitions = filter(forwardingDefinitions, byKey: key, byTypeOfArguments: true)
-    forwardingDefinitions = order(forwardingDefinitions, byTag: key.tag)
+    forwardingDefinitions = filter(definitions: forwardingDefinitions, byKey: key, byTypeOfArguments: true)
+    forwardingDefinitions = order(definitions: forwardingDefinitions, byTag: key.tag)

    //we need to carry on original tag
-    return forwardingDefinitions.first.map({ ($0.key.tagged(key.tag), $0.definition) })
+    return forwardingDefinitions.first.map({ ($0.key.tagged(with: key.tag), $0.definition) })
  }
  
 }
@@ -22,16 +22,19 @@
 // THE SOFTWARE.
 //

-public enum LogLevel {
-  case Verbose
-  case Errors
+public enum LogLevel: Int {
  case None
+  case Errors
+  case Verbose
 }
+
 public var logLevel: LogLevel = .Errors

-func log(_ logLevel: LogLevel, _ message: Any) {
-  guard case logLevel = Dip.logLevel else { return }
-  print(message)
+public var logger: (LogLevel, Any) -> Void = { print($1) }
+
+func log(level logLevel: LogLevel, _ message: Any) {
+  guard logLevel.rawValue <= Dip.logLevel.rawValue else { return }
+  logger(logLevel, message)
 }

 ///Internal protocol used to unwrap optional values.
@@ -41,21 +44,10 @@ protocol BoxType {

 extension Optional: BoxType {
  var unboxed: Any? {
-    switch self {
-    case let .some(value): return value
-    default: return nil
-    }
+    return self ?? nil
  }
 }

-extension ImplicitlyUnwrappedOptional: BoxType {
-  var unboxed: Any? {
-    switch self {
-    case let .some(value): return value
-    default: return nil
-    }
-  }
-}

 class Box<T> {
  var unboxed: T
@@ -64,6 +56,13 @@ class Box<T> {
  }
 }

+class NullableBox<T> {
+    var unboxed: T?
+    init(_ value: T?) {
+        self.unboxed = value
+    }
+}
+
 protocol WeakBoxType {
  var unboxed: AnyObject? { get }
 }
@@ -74,15 +73,8 @@ class WeakBox<T>: WeakBoxType {
    return unboxed as? T
  }

-  init(_ value: T) {
-    #if os(Linux)
-      weak var value: AnyObject? = value as? AnyObject
-    #else
-      weak var value: AnyObject? = value as AnyObject
-    #endif
-    guard value != nil else {
-      fatalError("Can not store weak reference to not a class instance (\(T.self))")
-    }
+  init(_ value: T?) {
+    weak var value: AnyObject? = value as AnyObject
    self.unboxed = value
  }
 }
@@ -106,17 +98,7 @@ extension Optional {
  }
 }

-extension Collection where Index: Comparable, Self.Indices.Index == Index {
-  subscript(safe index: Index) -> Generator.Element? {
-    guard indices.startIndex..<indices.endIndex ~= index else { return nil }
-    return self[index]
-  }
-  subscript(next index: Index) -> Generator.Element? {
-    return self[safe: indices.index(after: index)]
-  }
-}
-
-#if os(Linux)
+#if !_runtime(_ObjC)
  import Glibc
  class RecursiveLock {
    private var _lock = _initializeRecursiveMutex()
@@ -26,28 +26,56 @@ import XCTest
@testable import Dip

 private protocol Server: class {
-  weak var client: Client? {get}
-  var anotherClient: Client? {get set}
+  var client: Client! {get}
+  var anotherClient: Client! {get set}
 }

 private protocol Client: class {
  var server: Server? {get}
-  var anotherServer: Server? {get set}
+  var anotherServer: Server! {get set}
 }

+#if swift(>=5.1)
+private class ServerImp: Server {
+  
+  @InjectedWeak(didInject: { _ in
+    AutoInjectionTests.clientDidInjectCalled = true
+  }) var client: Client!
+  
+  @InjectedWeak(required: false) var _optionalProperty: AnyObject?
+  
+  weak var anotherClient: Client!
+}
+
+private class ClientImp: Client {
+  
+  @Injected(didInject: { _ in
+    AutoInjectionTests.serverDidInjectCalled = true
+  }) var server: Server
+  
+  @Injected(required: false) var _optionalProperty: AnyObject?
+  
+  @Injected(tag: "tagged") var taggedServer: Server
+  @Injected(tag: nil) var nilTaggedServer: Server
+  
+  var anotherServer: Server!
+}
+
+#else
+
 private class ServerImp: Server {
  
  var _client = InjectedWeak<Client>() { _ in
    AutoInjectionTests.clientDidInjectCalled = true
  }

-  var client: Client? {
+  var client: Client! {
    return _client.value
  }
  
-  weak var anotherClient: Client?
+  weak var anotherClient: Client!
  
-  weak var _optionalProperty = InjectedWeak<AnyObject>(required: false)
+  var _optionalProperty = InjectedWeak<AnyObject>(required: false)
 }

 private class ClientImp: Client {
@@ -60,14 +88,25 @@ private class ClientImp: Client {
    return _server.value
  }

-  var anotherServer: Server?
+  var anotherServer: Server!
  
  var _optionalProperty = Injected<AnyObject>(required: false)
  
  var taggedServer = Injected<Server>(tag: "tagged")
  var nilTaggedServer = Injected<Server>(tag: nil)
 }
+#endif

+#if swift(>=5.1)
+private class Obj1 {
+  @InjectedWeak var obj2: Obj2?
+  @Injected var obj3: Obj3?
+}
+
+private class Obj2 {
+  @Injected var obj1: Obj1?
+}
+#else
 private class Obj1 {
  let obj2 = InjectedWeak<Obj2>()
  let obj3 = Injected<Obj3>()
@@ -76,6 +115,7 @@ private class Obj1 {
 private class Obj2 {
  let obj1 = Injected<Obj1>()
 }
+#endif

 private class Obj3 {
  
@@ -92,26 +132,6 @@ class AutoInjectionTests: XCTestCase {
  static var clientDidInjectCalled: Bool = false

  let container = DependencyContainer()
-  
-  static var allTests = {
-    return [
-      ("testThatItResolvesAutoInjectedDependencies", testThatItResolvesAutoInjectedDependencies),
-      ("testThatItResolvesInheritedDependencies", testThatItResolvesInheritedDependencies),
-      ("testThatItCanSetInjectedProperty", testThatItCanSetInjectedProperty),
-      ("testThatItThrowsErrorIfFailsToAutoInjectDependency", testThatItThrowsErrorIfFailsToAutoInjectDependency),
-      ("testThatItResolvesAutoInjectedSingletons", testThatItResolvesAutoInjectedSingletons),
-      ("testThatItCallsResolveDependencyBlockWhenAutoInjecting", testThatItCallsResolveDependencyBlockWhenAutoInjecting),
-      ("testThatItReusesResolvedAutoInjectedInstances", testThatItReusesResolvedAutoInjectedInstances),
-      ("testThatItReusesAutoInjectedInstancesOnNextResolveOrAutoInjection", testThatItReusesAutoInjectedInstancesOnNextResolveOrAutoInjection),
-      ("testThatThereIsNoRetainCycleBetweenAutoInjectedCircularDependencies", testThatThereIsNoRetainCycleBetweenAutoInjectedCircularDependencies),
-      ("testThatItCallsDidInjectOnAutoInjectedProperty", testThatItCallsDidInjectOnAutoInjectedProperty),
-      ("testThatNoErrorThrownWhenOptionalPropertiesAreNotAutoInjected", testThatNoErrorThrownWhenOptionalPropertiesAreNotAutoInjected),
-      ("testThatItResolvesTaggedAutoInjectedProperties", testThatItResolvesTaggedAutoInjectedProperties),
-      ("testThatItPassesTagToAutoInjectedProperty", testThatItPassesTagToAutoInjectedProperty),
-      ("testThatItDoesNotPassTagToAutoInjectedPropertyWithExplicitTag", testThatItDoesNotPassTagToAutoInjectedPropertyWithExplicitTag),
-      ("testThatItAutoInjectsPropertyWithCollaboratingContainer", testThatItAutoInjectsPropertyWithCollaboratingContainer)
-    ]
-  }()

  override func setUp() {
    container.reset()
@@ -128,10 +148,18 @@ class AutoInjectionTests: XCTestCase {
  
  func testThatItResolvesInheritedDependencies() {
    class ServerImp2: ServerImp {
+      #if swift(>=5.1)
+      @InjectedWeak(didInject: { _ in
+        XCTAssertTrue(AutoInjectionTests.serverDidInjectCalled, "Inherited properties should be resolved first")
+      }) var client2: Client?
+      #else
      var _client2 = InjectedWeak<Client>() { _ in
        XCTAssertTrue(AutoInjectionTests.serverDidInjectCalled, "Inherited properties should be resolved first")
      }
-      var client2: Client? { return _client2.value }
+      var client2: Client? {
+        return _client2.value
+      }
+      #endif
    }

    container.register { ServerImp2() as Server }
@@ -153,17 +181,23 @@ class AutoInjectionTests: XCTestCase {
    
    let newServer = ServerImp()
    let newClient = ClientImp()
+    #if swift(>=5.1)
+    client.server = newServer
+    server.client = newClient
+    #else
    client._server = client._server.setValue(newServer)
    server._client = server._client.setValue(newClient)
+    #endif
    
    XCTAssertTrue(client.server === newServer)
    XCTAssertTrue(server.client === newClient)
  }
-  
+    
+
  func testThatItThrowsErrorIfFailsToAutoInjectDependency() {
    container.register { ClientImp() as Client }
    
-    AssertThrows(expression: try container.resolve() as Client)
+    XCTAssertThrowsError(try self.container.resolve() as Client)
  }

  func testThatItResolvesAutoInjectedSingletons() {
@@ -245,11 +279,19 @@ class AutoInjectionTests: XCTestCase {
    let obj2 = try! container.resolve() as Obj2
    
    //then
-    XCTAssertTrue(obj2 === obj2.obj1.value!.obj2.value!,
+    #if swift(>=5.1)
+    XCTAssertTrue(obj2 === obj2.obj1!.obj2!,
      "Auto-injected instance should be reused on next auto-injection")
    
-    XCTAssertTrue(obj2.obj1.value! === obj2.obj1.value!.obj3.value!.obj1,
+    XCTAssertTrue(obj2.obj1! === obj2.obj1!.obj3!.obj1,
      "Auto-injected instance should be reused on next resolve")
+    #else
+    XCTAssertTrue(obj2 === obj2.obj1.value!.obj2.value!,
+                  "Auto-injected instance should be reused on next auto-injection")
+    
+    XCTAssertTrue(obj2.obj1.value! === obj2.obj1.value!.obj3.value!.obj1,
+                  "Auto-injected instance should be reused on next resolve")
+    #endif
  }
  
  func testThatThereIsNoRetainCycleBetweenAutoInjectedCircularDependencies() {
@@ -294,7 +336,10 @@ class AutoInjectionTests: XCTestCase {
    container.register { ServerImp() as Server }
    container.register { ClientImp() as Client }

-    AssertNoThrow(expression: try container.resolve() as Client, "Container should not throw error if failed to resolve optional auto-injected properties.")
+    XCTAssertNoThrow(
+      try container.resolve() as Client,
+      "Container should not throw error if failed to resolve optional auto-injected properties."
+    )
  }
  
  func testThatItResolvesTaggedAutoInjectedProperties() {
@@ -307,7 +352,11 @@ class AutoInjectionTests: XCTestCase {
    let client = try! container.resolve() as Client
    
    //then
+    #if swift(>=5.1)
+    let taggedServer = (client as! ClientImp).taggedServer!
+    #else
    let taggedServer = (client as! ClientImp).taggedServer.value!
+    #endif
    let server = client.server!
    
    //server and tagged server should be resolved as different instances
@@ -326,7 +375,11 @@ class AutoInjectionTests: XCTestCase {
    let client = try! container.resolve(tag: "tagged") as Client
    
    //then
+    #if swift(>=5.1)
+    let taggedServer = (client as! ClientImp).taggedServer!
+    #else
    let taggedServer = (client as! ClientImp).taggedServer.value!
+    #endif
    let server = client.server!
    
    //server and tagged server should be resolved as the same instance
@@ -347,8 +400,13 @@ class AutoInjectionTests: XCTestCase {
    let client = try! container.resolve(tag: "otherTag") as Client
    
    //then
+    #if swift(>=5.1)
+    let taggedServer = (client as! ClientImp).taggedServer!
+    let nilTaggedServer = (client as! ClientImp).nilTaggedServer!
+    #else
    let taggedServer = (client as! ClientImp).taggedServer.value!
    let nilTaggedServer = (client as! ClientImp).nilTaggedServer.value!
+    #endif
    let server = client.server!
    
    //server and tagged server should be resolved as different instances
@@ -359,19 +417,89 @@ class AutoInjectionTests: XCTestCase {
    XCTAssertNotNil(taggedServer)
    XCTAssertNotNil(nilTaggedServer)
  }
-  
+
+
+  struct Foo
+  {
+    struct Bar
+    {
+
+    }
+  }
+
+  struct Baz
+  {
+    struct Bar
+    {
+
+    }
+  }
+
+
+  func testScopedTypes() {
+    let key1 = DefinitionKey(type: Baz.Bar.self, typeOfArguments: Void.self)
+    let key2 = DefinitionKey(type: Foo.Bar.self, typeOfArguments: Void.self)
+
+    XCTAssertNotEqual(key1, key2)
+    XCTAssertNotEqual(key1.hashValue, key2.hashValue)
+
+    container.register { Baz.Bar() }
+
+    XCTAssertNotNil(try? container.resolve() as Baz.Bar)
+    XCTAssertThrowsError(try container.resolve() as Foo.Bar)
+
+    container.register { Foo.Bar() }
+
+    XCTAssertNotNil(try? container.resolve() as Foo.Bar)
+  }
+
  func testThatItAutoInjectsPropertyWithCollaboratingContainer() {
    let collaborator = DependencyContainer()
    collaborator.register { ServerImp() as Server }
    container.register { ClientImp() as Client }
-    
+
    container.collaborate(with: collaborator)
    collaborator.collaborate(with: container)
-    
+
    let client = try! container.resolve() as Client
    let server = client.server
    XCTAssertTrue(client === server?.client)
  }
-  
+
+  func testThatItDoesNotAutoInjectIfDisabledInDefinition() {
+    container.register { ServerImp() as Server }
+    container.register { ClientImp() as Client }
+      .autoInjectingProperties(false)
+
+    let client = try! container.resolve() as Client
+    let server = client.server
+
+    XCTAssertNil(server)
+  }
+
+  func testThatItDoesNotAutoInjectIfDisabledInContainer() {
+    let container = DependencyContainer(autoInjectProperties: false)
+    container.register { ServerImp() as Server }
+    container.register { ClientImp() as Client }
+
+    let client = try! container.resolve() as Client
+    let server = client.server
+
+    XCTAssertNil(server)
+  }
+
+  func testThatItAutoInjectsWhenOverridenInDefinition() {
+    let container = DependencyContainer(autoInjectProperties: false)
+    container.register { ServerImp() as Server }
+    container.register { ClientImp() as Client }
+      .autoInjectingProperties(true)
+
+    let client = try! container.resolve() as Client
+    let server = client.server
+
+    XCTAssertNotNil(server)
+    XCTAssertNil(server?.client)
+  }
+
 }

@@ -31,13 +31,13 @@ private class ServiceImp2: Service { }
 private class ServiceImp3 {}

 private protocol AutoWiredClient: class {
-  var service1: Service? { get set }
-  var service2: Service? { get set }
+  var service1: Service! { get set }
+  var service2: Service! { get set }
 }

 private class AutoWiredClientImp: AutoWiredClient {
-  var service1: Service?
-  var service2: Service?
+  var service1: Service!
+  var service2: Service!
  
  init(service1: Service?, service2: ServiceImp2) {
    self.service1 = service1
@@ -50,28 +50,6 @@ class AutoWiringTests: XCTestCase {
  
  let container = DependencyContainer()

-  static var allTests = {
-    return [
-      ("testThatItCanResolveWithAutoWiring", testThatItCanResolveWithAutoWiring),
-      ("testThatItUsesAutoWireFactoryWithMostNumberOfArguments", testThatItUsesAutoWireFactoryWithMostNumberOfArguments),
-      ("testThatItThrowsAmbiguityErrorWhenUsingAutoWire", testThatItThrowsAmbiguityErrorWhenUsingAutoWire),
-      ("testThatItFirstTriesToUseTaggedFactoriesWhenUsingAutoWire", testThatItFirstTriesToUseTaggedFactoriesWhenUsingAutoWire),
-      ("testThatItFallbackToNotTaggedFactoryWhenUsingAutoWire", testThatItFallbackToNotTaggedFactoryWhenUsingAutoWire),
-      ("testThatItDoesNotTryToUseAutoWiringWhenCallingResolveWithArguments", testThatItDoesNotTryToUseAutoWiringWhenCallingResolveWithArguments),
-      ("testThatItDoesNotUseAutoWiringWhenFailedToResolveLowLevelDependency", testThatItDoesNotUseAutoWiringWhenFailedToResolveLowLevelDependency),
-      ("testThatItReusesInstancesResolvedWithAutoWiringWhenUsingAutoWiringAgain", testThatItReusesInstancesResolvedWithAutoWiringWhenUsingAutoWiringAgain),
-      ("testThatItReusesInstancesResolvedWithAutoWiringWhenUsingAutoWiringAgainWithTheSameTag", testThatItReusesInstancesResolvedWithAutoWiringWhenUsingAutoWiringAgainWithTheSameTag),
-      ("testThatItDoesNotReuseInstancesResolvedWithAutoWiringWhenUsingAutoWiringAgainWithAnotherTag", testThatItDoesNotReuseInstancesResolvedWithAutoWiringWhenUsingAutoWiringAgainWithAnotherTag),
-      ("testThatItUsesTagToResolveDependenciesWithAutoWiringWith1Argument", testThatItUsesTagToResolveDependenciesWithAutoWiringWith1Argument),
-      ("testThatItUsesTagToResolveDependenciesWithAutoWiringWith2Arguments", testThatItUsesTagToResolveDependenciesWithAutoWiringWith2Arguments),
-      ("testThatItUsesTagToResolveDependenciesWithAutoWiringWith3Arguments", testThatItUsesTagToResolveDependenciesWithAutoWiringWith3Arguments),
-      ("testThatItUsesTagToResolveDependenciesWithAutoWiringWith4Arguments", testThatItUsesTagToResolveDependenciesWithAutoWiringWith4Arguments),
-      ("testThatItUsesTagToResolveDependenciesWithAutoWiringWith5Arguments", testThatItUsesTagToResolveDependenciesWithAutoWiringWith5Arguments),
-      ("testThatItUsesTagToResolveDependenciesWithAutoWiringWith6Arguments", testThatItUsesTagToResolveDependenciesWithAutoWiringWith6Arguments),
-      ("testThatItCanAutoWireOptional", testThatItCanAutoWireOptional)
-    ]
-  }()
-
  override func setUp() {
    container.reset()
  }
@@ -110,7 +88,7 @@ class AutoWiringTests: XCTestCase {
    //2 args
    var factoryWithMostNumberOfArgumentsCalled = false
    container.register { AutoWiredClientImp(service1: $0, service2: $1) as AutoWiredClient }
-      .resolvingProperties { _ in
+      .resolvingProperties { _,_  in
        factoryWithMostNumberOfArgumentsCalled = true
    }
    
@@ -136,17 +114,15 @@ class AutoWiringTests: XCTestCase {
    container.register { ServiceImp2() }
    
    //when
-    AssertThrows(expression: try container.resolve() as AutoWiredClient) { error -> Bool in
-      switch error {
-      case let DipError.autoWiringFailed(_, error):
-        if case DipError.ambiguousDefinitions = error { return true }
-        else { return false }
-      default: return false
+    XCTAssertThrowsError(try self.container.resolve() as AutoWiredClient) { (error) in
+      guard case DipError.autoWiringFailed(_, DipError.ambiguousDefinitions) = error else {
+        XCTFail("Thrown unexpected error: \(error)")
+        return
      }
    }
  }
  
-  func testThatItFirstTriesToUseTaggedFactoriesWhenUsingAutoWire() {
+  func testThatItPrefersTaggedFactoryWithDifferentNumberOfArgumentsWhenUsingAutoWire() {
    //given
    
    //1 arg
@@ -162,7 +138,7 @@ class AutoWiringTests: XCTestCase {
    container.register(tag: "tag") { AutoWiredClientImp(service1: $0, service2: try self.container.resolve()) as AutoWiredClient }
    
    //2 arg tagged
-    container.register(tag: "tag") { AutoWiredClientImp(service1: $0, service2: $1) as AutoWiredClient }.resolvingProperties { _ in
+    container.register(tag: "tag") { AutoWiredClientImp(service1: $0, service2: $1) as AutoWiredClient }.resolvingProperties { _,_  in
      taggedFactoryWithMostNumberOfArgumentsCalled = true
    }

@@ -176,12 +152,37 @@ class AutoWiringTests: XCTestCase {
    XCTAssertTrue(taggedFactoryWithMostNumberOfArgumentsCalled)
  }
  
+  func testThatItPrefersTaggedFactoryWithDifferentTypesOfArgumentsWhenUsingAutoWire() {
+    //given
+    
+    //1 arg
+    container.register { AutoWiredClientImp(service1: $0, service2: try self.container.resolve()) as AutoWiredClient }
+    
+    //2 args
+    container.register { AutoWiredClientImp(service1: $0, service2: $1) as AutoWiredClient }
+    
+    //1 arg tagged
+    var taggedFactoryCalled = false
+    container.register(tag: "tag") { AutoWiredClientImp(service1: try self.container.resolve(), service2: $0) as AutoWiredClient }.resolvingProperties { _,_  in
+      taggedFactoryCalled = true
+    }
+    
+    container.register() { ServiceImp1() as Service }
+    container.register { ServiceImp2() }
+    
+    //when
+    let _ = try! container.resolve(tag: "tag") as AutoWiredClient
+    
+    //then
+    XCTAssertTrue(taggedFactoryCalled)
+  }
+  
  func testThatItFallbackToNotTaggedFactoryWhenUsingAutoWire() {
    //given
    
    //1 arg
    var notTaggedFactoryWithMostNumberOfArgumentsCalled = false
-    container.register { AutoWiredClientImp(service1: $0, service2: try self.container.resolve()) as AutoWiredClient }.resolvingProperties { _ in
+    container.register { AutoWiredClientImp(service1: $0, service2: try self.container.resolve()) as AutoWiredClient }.resolvingProperties { _,_  in
      notTaggedFactoryWithMostNumberOfArgumentsCalled = true
    }
    
@@ -206,8 +207,12 @@ class AutoWiringTests: XCTestCase {
    
    //when
    let service = try! container.resolve() as Service
-    AssertThrows(expression: try container.resolve(arguments: service) as AutoWiredClient,
-      "Container should not use auto-wiring when resolving with runtime arguments")
+    
+    // then
+    XCTAssertThrowsError(
+      try self.container.resolve(arguments: service) as AutoWiredClient,
+      "Container should not use auto-wiring when resolving with runtime arguments"
+    )
  }
  
  func testThatItDoesNotUseAutoWiringWhenFailedToResolveLowLevelDependency() {
@@ -232,12 +237,13 @@ class AutoWiringTests: XCTestCase {
    container.register { ServiceImp2() }
    
    //then
-    AssertThrows(expression: try container.resolve() as AutoWiredClient,
-      "Container should not use auto-wiring when definition for resolved type is registered.")
+    XCTAssertThrowsError(
+      try self.container.resolve() as AutoWiredClient,
+      "Container should not use auto-wiring when definition for resolved type is registered."
+    )
  }
  
  func testThatItReusesInstancesResolvedWithAutoWiringWhenUsingAutoWiringAgain() {
-    
    //given
    container.register { ServiceImp1() as Service }
    container.register { ServiceImp2() }
@@ -255,8 +261,10 @@ class AutoWiringTests: XCTestCase {
    let resolved = try! container.resolve() as AutoWiredClient
    
    //then
-    //when doing another auto-wiring during resolve we should reuse instance
-    XCTAssertTrue((resolved as! AutoWiredClientImp) === (anotherInstance as! AutoWiredClientImp))
+    XCTAssertTrue(
+      (resolved as! AutoWiredClientImp) === (anotherInstance as! AutoWiredClientImp),
+      "when doing another auto-wiring during resolve we should reuse instance"
+    )
  }
  
  func testThatItReusesInstancesResolvedWithoutAutoWiringWhenUsingAutoWiringAgain() {
@@ -280,8 +288,10 @@ class AutoWiringTests: XCTestCase {
    let resolved = try! container.resolve(arguments: service1, service2) as AutoWiredClient
    
    //then
-    //when doing another auto-wiring during resolve we should reuse instance
-    XCTAssertTrue((resolved as! AutoWiredClientImp) === (anotherInstance as! AutoWiredClientImp))
+    XCTAssertTrue(
+      (resolved as! AutoWiredClientImp) === (anotherInstance as! AutoWiredClientImp),
+      "when doing another auto-wiring during resolve we should reuse instance"
+    )
  }

  func testThatItReusesInstancesResolvedWithAutoWiringWhenUsingAutoWiringAgainWithTheSameTag() {
@@ -303,8 +313,10 @@ class AutoWiringTests: XCTestCase {
    let resolved = try! container.resolve(tag: "tag") as AutoWiredClient
    
    //then
-    //when doing another auto-wiring during resolve we should reuse instance
-    XCTAssertTrue((resolved as! AutoWiredClientImp) === (anotherInstance as! AutoWiredClientImp))
+    XCTAssertTrue(
+      (resolved as! AutoWiredClientImp) === (anotherInstance as! AutoWiredClientImp),
+      "when doing another auto-wiring during resolve we should reuse instance"
+    )
  }
  
  func testThatItDoesNotReuseInstancesResolvedWithAutoWiringWhenUsingAutoWiringAgainWithAnotherTag() {
@@ -326,8 +338,10 @@ class AutoWiringTests: XCTestCase {
    let resolved = try! container.resolve(tag: "tag") as AutoWiredClient
    
    //then
-    //when doing another auto-wiring during resolve we should reuse instance
-    XCTAssertTrue((resolved as! AutoWiredClientImp) !== (anotherInstance as! AutoWiredClientImp))
+    XCTAssertTrue(
+      (resolved as! AutoWiredClientImp) !== (anotherInstance as! AutoWiredClientImp),
+      "when doing another auto-wiring during resolve we should reuse instance"
+    )
  }
  
  func testThatItUsesTagToResolveDependenciesWithAutoWiringWith1Argument() {
@@ -437,19 +451,11 @@ class AutoWiringTests: XCTestCase {
    
    var resolved: AutoWiredClient?
    //when
-    AssertNoThrow(expression: resolved = try container.resolve() as AutoWiredClient?)
+    XCTAssertNoThrow(resolved = try self.container.resolve() as AutoWiredClient?)
    XCTAssertNotNil(resolved)
    
    //when
-    AssertNoThrow(expression: resolved = try container.resolve() as AutoWiredClient!)
-    XCTAssertNotNil(resolved)
-
-    //when
-    AssertNoThrow(expression: resolved = try container.resolve(tag: "tag") as AutoWiredClient?)
-    XCTAssertNotNil(resolved)
-    
-    //when
-    AssertNoThrow(expression: resolved = try container.resolve(tag: "tag") as AutoWiredClient!)
+    XCTAssertNoThrow(resolved = try self.container.resolve(tag: "tag") as AutoWiredClient?)
    XCTAssertNotNil(resolved)
  }
  
@@ -47,26 +47,6 @@ class ComponentScopeTests: XCTestCase {
  
  let container = DependencyContainer()
  
-  static var allTests = {
-    return [
-      ("testThatSharedIsDefaultScope", testThatSharedIsDefaultScope),
-      ("testThatScopeCanBeChanged", testThatScopeCanBeChanged),
-      ("testThatItResolvesTypeAsNewInstanceForUniqueScope", testThatItResolvesTypeAsNewInstanceForUniqueScope),
-      ("testThatItReusesInstanceForSingletonScope", testThatItReusesInstanceForSingletonScope),
-      ("testThatSingletonIsNotReusedAcrossContainers", testThatSingletonIsNotReusedAcrossContainers),
-      ("testThatSingletonIsReleasedWhenDefinitionIsRemoved", testThatSingletonIsReleasedWhenDefinitionIsRemoved),
-      ("testThatSingletonIsReleasedWhenDefinitionIsOverridden", testThatSingletonIsReleasedWhenDefinitionIsOverridden),
-      ("testThatSingletonIsReleasedWhenContainerIsReset", testThatSingletonIsReleasedWhenContainerIsReset),
-      ("testThatItReusesInstanceInSharedScopeDuringResolve", testThatItReusesInstanceInSharedScopeDuringResolve),
-      ("testThatItDoesNotReuseInstanceInSharedScopeInNextResolve", testThatItDoesNotReuseInstanceInSharedScopeInNextResolve),
-      ("testThatItDoesNotReuseInstanceInSharedScopeResolvedForNilTag", testThatItDoesNotReuseInstanceInSharedScopeResolvedForNilTagWhenResolvingForAnotherTag),
-      ("testThatItReusesInstanceInSharedScopeResolvedForNilTag", testThatItReusesInstanceInSharedScopeResolvedForNilTag),
-      ("testThatItReusesResolvedInstanceWhenResolvingOptional", testThatItReusesResolvedInstanceWhenResolvingOptional),
-      ("testThatItHoldsWeakReferenceToWeakSingletonInstance",
-          testThatItHoldsWeakReferenceToWeakSingletonInstance)
-    ]
-  }()
-  
  override func setUp() {
    container.reset()
  }
@@ -300,23 +280,17 @@ class ComponentScopeTests: XCTestCase {
  
  func testThatItReusesResolvedInstanceWhenResolvingOptional() {
    var otherService: Service!
-    var impOtherService: Service!
    var anyOtherService: Any!
-    var anyImpOtherService: Any!
-    
+
    container.register { ServiceImp1() as Service }
      .resolvingProperties { container, service in
        otherService = try! container.resolve() as Service?
-        impOtherService = try! container.resolve() as Service!
        anyOtherService = try! container.resolve((Service?).self)
-        anyImpOtherService = try! container.resolve((Service!).self)
    }
    
    let service = try! container.resolve() as Service
    XCTAssertTrue(otherService as! ServiceImp1 === service as! ServiceImp1)
-    XCTAssertTrue(impOtherService as! ServiceImp1 === service as! ServiceImp1)
    XCTAssertTrue(anyOtherService as! ServiceImp1 === service as! ServiceImp1)
-    XCTAssertTrue(anyImpOtherService as! ServiceImp1 === service as! ServiceImp1)
  }
  
  func testThatItHoldsWeakReferenceToWeakSingletonInstance() {
@@ -335,6 +309,23 @@ class ComponentScopeTests: XCTestCase {
    XCTAssertNil(weakSingleton)
  }
  
+  func testThatItResolvesWeakSingletonAgainAfterItWasReleased() {
+    Dip.logLevel = .Verbose
+    //given
+    let service = container.register(.weakSingleton) { ServiceImp1() }
+    container.register(service, type: Service.self)
+    
+    //when
+    //resolve and realease reight away
+    _ = try? container.resolve() as ServiceImp1
+    
+    //then
+    XCTAssertNoThrow(
+      try container.resolve() as Service,
+      "Weak singleton should be resolved again."
+    )
+  }
+  
  func testThatCollaboratingContainersReuseSingletonsResolvedByAnotherContainer() {
    func test(_ scope: ComponentScope, line: UInt = #line) {
      let container1 = DependencyContainer()
@@ -39,20 +39,6 @@ class ContextTests: XCTestCase {

  let container = DependencyContainer()
  
-  static var allTests = {
-    return [
-      ("testThatContextStoresCurrentlyResolvedType", testThatContextStoresCurrentlyResolvedType),
-      ("testThatContextStoresInjectedInType", testThatContextStoresInjectedInType),
-      ("testThatContextStoresTheTagPassedToResolve", testThatContextStoresTheTagPassedToResolve),
-      ("testThatContextStoresTheTagPassedToResolveWhenAutoInjecting", testThatContextStoresTheTagPassedToResolveWhenAutoInjecting),
-      ("testThatContextStoresTheTagPassedToResolveWhenAutoWiring", testThatContextStoresTheTagPassedToResolveWhenAutoWiring),
-      ("testThatContextDoesNotOverrideNilTagPassedToResolve", testThatContextDoesNotOverrideNilTagPassedToResolve),
-      ("testThatContextStoresNameOfAutoInjectedProperty", testThatContextStoresNameOfAutoInjectedProperty),
-      ("testThatItDoesNotSetInjectedInTypeWhenResolvingWithCollaboration", testThatItDoesNotSetInjectedInTypeWhenResolvingWithCollaboration),
-      ("testThatContextIsPreservedWhenResolvingWithCollaboration", testThatContextIsPreservedWhenResolvingWithCollaboration)
-    ]
-  }()
-  
  override func setUp() {
    container.reset()
    container.register { ServiceImp2() }
@@ -63,7 +49,7 @@ class ContextTests: XCTestCase {
      XCTAssertTrue(self.container.context.resolvingType == Service.self)
      let _ = try self.container.resolve() as ServiceImp1
      return ServiceImp1() as Service
-      }.resolvingProperties { _ in
+      }.resolvingProperties { _,_  in
        XCTAssertTrue(self.container.context.resolvingType == Service.self)
        let _ = try self.container.resolve() as ServiceImp1
    }
@@ -71,7 +57,7 @@ class ContextTests: XCTestCase {
    container.register { () -> ServiceImp1 in
      XCTAssertTrue(self.container.context.resolvingType == ServiceImp1.self)
      return ServiceImp1()
-      }.resolvingProperties { _ in
+      }.resolvingProperties { _,_  in
        XCTAssertTrue(self.container.context.resolvingType == ServiceImp1.self)
    }
    
@@ -83,7 +69,7 @@ class ContextTests: XCTestCase {
      XCTAssertNil(self.container.context.injectedInType)
      let _ = try self.container.resolve() as ServiceImp1
      return ServiceImp1() as Service
-      }.resolvingProperties { _ in
+      }.resolvingProperties { _,_  in
        XCTAssertNil(self.container.context.injectedInType)
        let _ = try self.container.resolve() as ServiceImp1
    }
@@ -91,7 +77,7 @@ class ContextTests: XCTestCase {
    container.register { () -> ServiceImp1 in
      XCTAssertTrue(self.container.context.injectedInType == Service.self)
      return ServiceImp1()
-      }.resolvingProperties { _ in
+      }.resolvingProperties { _,_  in
        XCTAssertTrue(self.container.context.injectedInType == Service.self)
    }
    
@@ -104,7 +90,7 @@ class ContextTests: XCTestCase {
      XCTAssertTrue(DependencyContainer.Tag.String("tag") ~= self.container.context.tag!)
      let _ = try self.container.resolve(tag: "otherTag") as ServiceImp1
      return ServiceImp1() as Service
-      }.resolvingProperties { _ in
+      }.resolvingProperties { _,_  in
        XCTAssertNotNil(self.container.context.tag)
        XCTAssertTrue(DependencyContainer.Tag.String("tag") ~= self.container.context.tag!)
        let _ = try self.container.resolve(tag: "otherTag") as ServiceImp1
@@ -114,7 +100,7 @@ class ContextTests: XCTestCase {
      XCTAssertNotNil(self.container.context.tag)
      XCTAssertTrue(DependencyContainer.Tag.String("otherTag") ~= self.container.context.tag!)
      return ServiceImp1()
-      }.resolvingProperties { _ in
+      }.resolvingProperties { _,_  in
        XCTAssertNotNil(self.container.context.tag)
        XCTAssertTrue(DependencyContainer.Tag.String("otherTag") ~= self.container.context.tag!)
    }
@@ -135,7 +121,7 @@ class ContextTests: XCTestCase {
        XCTAssertTrue(DependencyContainer.Tag.String("injectedTag") ~= self.container.context.tag!)
      }
      return ServiceImp2()
-      }.resolvingProperties { _ in
+      }.resolvingProperties { _,_  in
        if self.container.context.injectedInProperty == "injectedNilTag" {
          XCTAssertNil(self.container.context.tag)
        }
@@ -149,7 +135,7 @@ class ContextTests: XCTestCase {
      XCTAssertNotNil(self.container.context.tag)
      XCTAssertTrue(DependencyContainer.Tag.String("tag") ~= self.container.context.tag!)
      return ServiceImp2()
-      }.resolvingProperties { _ in
+      }.resolvingProperties { _,_  in
        XCTAssertNotNil(self.container.context.tag)
        XCTAssertTrue(DependencyContainer.Tag.String("tag") ~= self.container.context.tag!)
    }
@@ -160,14 +146,14 @@ class ContextTests: XCTestCase {
  func testThatContextStoresTheTagPassedToResolveWhenAutoWiring() {
    container.register { (_: ServiceImp1) -> Service in
      return ServiceImp1() as Service
-      }.resolvingProperties { _ in
+      }.resolvingProperties { _,_  in
    }
    
    container.register { () -> ServiceImp1 in
      XCTAssertNotNil(self.container.context.tag)
      XCTAssertTrue(DependencyContainer.Tag.String("tag") ~= self.container.context.tag!)
      return ServiceImp1()
-      }.resolvingProperties { _ in
+      }.resolvingProperties { _,_  in
        XCTAssertNotNil(self.container.context.tag)
        XCTAssertTrue(DependencyContainer.Tag.String("tag") ~= self.container.context.tag!)
    }
@@ -181,7 +167,7 @@ class ContextTests: XCTestCase {
      XCTAssertTrue(DependencyContainer.Tag.String("tag") ~= self.container.context.tag!)
      let _ = try self.container.resolve() as ServiceImp1
      return ServiceImp1() as Service
-      }.resolvingProperties { _ in
+      }.resolvingProperties { _,_  in
        XCTAssertNotNil(self.container.context.tag)
        XCTAssertTrue(DependencyContainer.Tag.String("tag") ~= self.container.context.tag!)
        let _ = try self.container.resolve() as ServiceImp1
@@ -190,7 +176,7 @@ class ContextTests: XCTestCase {
    container.register { () -> ServiceImp1 in
      XCTAssertNil(self.container.context.tag)
      return ServiceImp1()
-      }.resolvingProperties { _ in
+      }.resolvingProperties { _,_  in
        XCTAssertNil(self.container.context.tag)
    }
    
@@ -207,7 +193,7 @@ class ContextTests: XCTestCase {
      XCTAssertNotNil(self.container.context.injectedInProperty)
      XCTAssertTrue(names.contains(self.container.context.injectedInProperty!))
      return ServiceImp2()
-      }.resolvingProperties { _ in
+      }.resolvingProperties { _,_  in
        XCTAssertNotNil(self.container.context.injectedInProperty)
        XCTAssertTrue(names.contains(self.container.context.injectedInProperty!))
    }
@@ -239,7 +225,7 @@ class ContextTests: XCTestCase {
      XCTAssertTrue(self.container.context.resolvingType == Service.self)
      let _ = try self.container.resolve() as ServiceImp1
      return ServiceImp1() as Service
-      }.resolvingProperties { _ in
+      }.resolvingProperties { _,_  in
        XCTAssertTrue(self.container.context.resolvingType == Service.self)
        let _ = try self.container.resolve() as ServiceImp1
    }
@@ -247,7 +233,7 @@ class ContextTests: XCTestCase {
    collaborator.register { () -> ServiceImp1 in
      XCTAssertTrue(collaborator.context.resolvingType == ServiceImp1.self)
      return ServiceImp1()
-      }.resolvingProperties { _ in
+      }.resolvingProperties { _,_  in
        XCTAssertTrue(collaborator.context.resolvingType == ServiceImp1.self)
    }
    
@@ -36,18 +36,6 @@ class DefinitionTests: XCTestCase {
  let tag1 = DependencyContainer.Tag.String("tag1")
  let tag2 = DependencyContainer.Tag.String("tag2")
  
-  static var allTests = {
-    return [
-      ("testThatDefinitionKeyIsEqualBy_Type_Factory_Tag", testThatDefinitionKeyIsEqualBy_Type_Factory_Tag),
-      ("testThatDefinitionKeysWithDifferentTypesAreNotEqual", testThatDefinitionKeysWithDifferentTypesAreNotEqual),
-      ("testThatDefinitionKeysWithDifferentFactoriesAreNotEqual", testThatDefinitionKeysWithDifferentFactoriesAreNotEqual),
-      ("testThatDefinitionKeysWithDifferentTagsAreNotEqual", testThatDefinitionKeysWithDifferentTagsAreNotEqual),
-      ("testThatResolveDependenciesCallsResolveDependenciesBlock", testThatResolveDependenciesCallsResolveDependenciesBlock),
-      ("testThatResolveDependenciesBlockIsNotCalledWhenPassedWrongInstance", testThatResolveDependenciesBlockIsNotCalledWhenPassedWrongInstance),
-      ("testThatItRegisteresOptionalTypesAsForwardedTypes", testThatItRegisteresOptionalTypesAsForwardedTypes)
-    ]
-  }()
-
  func testThatDefinitionKeyIsEqualBy_Type_Factory_Tag() {
    let equalKey1 = DefinitionKey(type: Service.self, typeOfArguments: F1.self, tag: tag1)
    let equalKey2 = DefinitionKey(type: Service.self, typeOfArguments: F1.self, tag: tag1)
@@ -116,7 +104,6 @@ class DefinitionTests: XCTestCase {
    let def = Definition<Service, ()>(scope: .unique) { ServiceImp() as Service }
    
    XCTAssertTrue(def.implementingTypes.contains(where: { $0 == Service?.self }))
-    XCTAssertTrue(def.implementingTypes.contains(where: { $0 == Service!.self }))
  }
  
 }
@@ -30,10 +30,10 @@ private class ServiceImp1: Service { }
 private class ServiceImp2: Service { }

 private protocol Server: class {
-  weak var client: Client? { get }
+  var client: Client! { get }
 }
 private protocol Client: class {
-  var server: Server? { get }
+  var server: Server! { get }
 }

 class ResolvableService: Service, Resolvable {
@@ -49,30 +49,6 @@ class DipTests: XCTestCase {

  let container = DependencyContainer()

-  static var allTests = {
-    return [
-      ("testThatCreatingContainerWithConfigBlockDoesNotCreateRetainCycle", testThatCreatingContainerWithConfigBlockDoesNotCreateRetainCycle),
-      ("testThatItResolvesInstanceRegisteredWithoutTag", testThatItResolvesInstanceRegisteredWithoutTag),
-      ("testThatItResolvesInstanceRegisteredWithTag", testThatItResolvesInstanceRegisteredWithTag),
-      ("testThatItResolvesDifferentInstancesRegisteredForDifferentTags", testThatItResolvesDifferentInstancesRegisteredForDifferentTags),
-      ("testThatNewRegistrationOverridesPreviousRegistration", testThatNewRegistrationOverridesPreviousRegistration),
-      ("testThatItCallsResolveDependenciesOnDefinition", testThatItCallsResolveDependenciesOnDefinition),
-      ("testThatItThrowsErrorIfCanNotFindDefinitionForType", testThatItThrowsErrorIfCanNotFindDefinitionForType),
-      ("testThatItThrowsErrorIfCanNotFindDefinitionForTag", testThatItThrowsErrorIfCanNotFindDefinitionForTag),
-      ("testThatItThrowsErrorIfCanNotFindDefinitionForFactoryWithArguments", testThatItThrowsErrorIfCanNotFindDefinitionForFactoryWithArguments),
-      ("testThatItThrowsErrorIfConstructorThrows", testThatItThrowsErrorIfConstructorThrows),
-      ("testThatItThrowsErrorIfFailsToResolveDependency", testThatItThrowsErrorIfFailsToResolveDependency),
-      ("testThatItCallsDidResolveDependenciesOnResolvableIntance", testThatItCallsDidResolveDependenciesOnResolvableIntance),
-      ("testThatItCallsDidResolveDependenciesInReverseOrder", testThatItCallsDidResolveDependenciesInReverseOrder),
-      ("testItCallsResolveDependenciesOnResolableInstance", testItCallsResolveDependenciesOnResolableInstance),
-      ("testThatItResolvesCircularDependencies", testThatItResolvesCircularDependencies),
-      ("testThatItCanResolveUsingContainersCollaboration", testThatItCanResolveUsingContainersCollaboration),
-      ("testThatCollaboratingWithSelfIsIgnored", testThatCollaboratingWithSelfIsIgnored),
-      ("testThatCollaboratingContainersAreWeakReferences", testThatCollaboratingContainersAreWeakReferences),
-      ("testThatCollaboratingContainersReuseInstancesResolvedByAnotherContainer", testThatCollaboratingContainersReuseInstancesResolvedByAnotherContainer),
-    ]
-  }()
-
  override func setUp() {
    container.reset()
  }
@@ -123,12 +99,6 @@ class DipTests: XCTestCase {
    
    //then
    XCTAssertTrue(optService is ServiceImp1)
-    
-    //and when
-    let impService = try! container.resolve((Service!).self)
-    
-    //then
-    XCTAssertTrue(impService is ServiceImp1)
  }
  
  func testThatItResolvesInstanceRegisteredWithTag() {
@@ -152,12 +122,6 @@ class DipTests: XCTestCase {
    
    //then
    XCTAssertTrue(optService is ServiceImp1)
-    
-    //and when
-    let impService = try! container.resolve((Service!).self, tag: "service")
-    
-    //then
-    XCTAssertTrue(impService is ServiceImp1)
  }
  
  func testThatItResolvesDifferentInstancesRegisteredForDifferentTags() {
@@ -188,14 +152,6 @@ class DipTests: XCTestCase {
    //then
    XCTAssertTrue(optService1 is ServiceImp1)
    XCTAssertTrue(optService2 is ServiceImp2)
-  
-    //and when
-    let impService1 = try! container.resolve((Service!).self, tag: "service1")
-    let impService2 = try! container.resolve((Service!).self, tag: "service2")
-    
-    //then
-    XCTAssertTrue(impService1 is ServiceImp1)
-    XCTAssertTrue(impService2 is ServiceImp2)
  }
  
  func testThatNewRegistrationOverridesPreviousRegistration() {
@@ -241,38 +197,34 @@ class DipTests: XCTestCase {
    XCTAssertTrue(resolveDependenciesCalled)

    resolveDependenciesCalled = false
-    
-    //and when
-    let _ = try! container.resolve((Service!).self)
-    
-    //then
-    XCTAssertTrue(resolveDependenciesCalled)
  }
-  
+
  func testThatItThrowsErrorIfCanNotFindDefinitionForType() {
    //given
    container.register { ServiceImp1() as ServiceImp1 }
    
    //when
-    AssertThrows(expression: try container.resolve() as Service) { error in
-      guard case let DipError.definitionNotFound(key) = error else { return false }
+    XCTAssertThrowsError(try self.container.resolve() as Service) { error in
+      guard case let DipError.definitionNotFound(key) = error else {
+        XCTFail("Thrown unexpected error: \(error)")
+        return
+      }
      
      //then
      let expectedKey = DefinitionKey(type: Service.self, typeOfArguments: Void.self, tag: nil)
      XCTAssertEqual(key, expectedKey)
-
-      return true
    }

    //and when
-    AssertThrows(expression: try container.resolve(Service.self)) { error in
-      guard case let DipError.definitionNotFound(key) = error else { return false }
+    XCTAssertThrowsError(try self.container.resolve(Service.self)) { error in
+      guard case let DipError.definitionNotFound(key) = error else {
+        XCTFail("Thrown unexpected error: \(error)")
+        return
+      }
      
      //then
      let expectedKey = DefinitionKey(type: Service.self, typeOfArguments: Void.self, tag: nil)
      XCTAssertEqual(key, expectedKey)
-      
-      return true
    }
  }
  
@@ -281,25 +233,27 @@ class DipTests: XCTestCase {
    container.register(tag: "some tag") { ServiceImp1() as Service }
    
    //when
-    AssertThrows(expression: try container.resolve(tag: "other tag") as Service) { error in
-      guard case let DipError.definitionNotFound(key) = error else { return false }
+    XCTAssertThrowsError(try self.container.resolve(tag: "other tag") as Service) { error in
+      guard case let DipError.definitionNotFound(key) = error  else {
+        XCTFail("Thrown unexpected error: \(error)")
+        return
+      }
      
      //then
      let expectedKey = DefinitionKey(type: Service.self, typeOfArguments: Void.self, tag: "other tag")
      XCTAssertEqual(key, expectedKey)
-      
-      return true
    }

    //and when
-    AssertThrows(expression: try container.resolve(Service.self, tag: "other tag")) { error in
-      guard case let DipError.definitionNotFound(key) = error else { return false }
+    XCTAssertThrowsError(try self.container.resolve(Service.self, tag: "other tag")) { error in
+      guard case let DipError.definitionNotFound(key) = error else {
+        XCTFail("Thrown unexpected error: \(error)")
+        return
+      }
      
      //then
      let expectedKey = DefinitionKey(type: Service.self, typeOfArguments: Void.self, tag: "other tag")
      XCTAssertEqual(key, expectedKey)
-      
-      return true
    }
  }
  
@@ -308,25 +262,27 @@ class DipTests: XCTestCase {
    container.register { ServiceImp1() as Service }
    
    //when
-    AssertThrows(expression: try container.resolve(arguments: "some string") as Service) { error in
-      guard case let DipError.definitionNotFound(key) = error else { return false }
+    XCTAssertThrowsError(try self.container.resolve(arguments: "some string") as Service) { error in
+      guard case let DipError.definitionNotFound(key) = error else {
+        XCTFail("Thrown unexpected error: \(error)")
+        return
+      }
      
      //then
      let expectedKey = DefinitionKey(type: Service.self, typeOfArguments: String.self, tag: nil)
      XCTAssertEqual(key, expectedKey)
-
-      return true
    }

    //and when
-    AssertThrows(expression: try container.resolve(Service.self, arguments: "some string")) { error in
-      guard case let DipError.definitionNotFound(key) = error else { return false }
+    XCTAssertThrowsError(try self.container.resolve(Service.self, arguments: "some string")) { error in
+      guard case let DipError.definitionNotFound(key) = error else {
+        XCTFail("Thrown unexpected error: \(error)")
+        return
+      }
      
      //then
      let expectedKey = DefinitionKey(type: Service.self, typeOfArguments: String.self, tag: nil)
      XCTAssertEqual(key, expectedKey)
-      
-      return true
    }
  }
  
@@ -337,18 +293,18 @@ class DipTests: XCTestCase {
    container.register { () throws -> Service in throw expectedError }
    
    //when
-    AssertThrows(expression: try container.resolve() as Service) { error in
-      switch error {
-      case let DipError.definitionNotFound(key) where key == failedKey: return true
-      default: return false
+    XCTAssertThrowsError(try self.container.resolve() as Service) { error in
+      guard case let DipError.definitionNotFound(key) = error, key == failedKey else {
+        XCTFail("Thrown unexpected error: \(error)")
+        return
      }
    }
    
    //and when
-    AssertThrows(expression: try container.resolve(Service.self)) { error in
-      switch error {
-      case let DipError.definitionNotFound(key) where key == failedKey: return true
-      default: return false
+    XCTAssertThrowsError(try self.container.resolve(Service.self)) { error in
+      guard case let DipError.definitionNotFound(key) = error, key == failedKey else {
+        XCTFail("Thrown unexpected error: \(error)")
+        return
      }
    }
  }
@@ -364,18 +320,18 @@ class DipTests: XCTestCase {
    }
    
    //when
-    AssertThrows(expression: try container.resolve() as Service) { error in
-      switch error {
-      case let DipError.definitionNotFound(key) where key == failedKey: return true
-      default: return false
+    XCTAssertThrowsError(try self.container.resolve() as Service) { error in
+      guard case let DipError.definitionNotFound(key) = error, key == failedKey else {
+        XCTFail("Thrown unexpected error: \(error)")
+        return
      }
    }
    
    //and when
-    AssertThrows(expression: try container.resolve(Service.self)) { error in
-      switch error {
-      case let DipError.definitionNotFound(key) where key == failedKey: return true
-      default: return false
+    XCTAssertThrowsError(try self.container.resolve(Service.self)) { error in
+      guard case let DipError.definitionNotFound(key) = error, key == failedKey else {
+        XCTFail("Thrown unexpected error: \(error)")
+        return
      }
    }
  }
@@ -483,8 +439,8 @@ class DipTests: XCTestCase {
  func testThatItResolvesCircularDependencies() {
    
    class ResolvableServer: Server, Resolvable {
-      weak var client: Client?
-      weak var secondClient: Client?
+      weak var client: Client!
+      weak var secondClient: Client!
      
      init(client: Client) {
        self.client = client
@@ -505,17 +461,9 @@ class DipTests: XCTestCase {
      
    }
    
-    //Due to a bug in Swift 3 Mirror fails if weak property is not NSObject
-    //https://bugs.swift.org/browse/SR-2144
-    class ResolvableClient: NSObject, Client, Resolvable {
-      var server: Server?
-      var secondServer: Server?
-      
-      #if os(Linux)
-      init() {}
-      #else
-      override init() { super.init() }
-      #endif
+    class ResolvableClient: Client, Resolvable {
+      var server: Server!
+      var secondServer: Server!
      
      var didResolveDependenciesCalled = false
      
@@ -528,22 +476,15 @@ class DipTests: XCTestCase {
        XCTAssertNotNil(self.server?.client)
        XCTAssertNotNil(self.secondServer?.client)
      }
-      
    }

    //given
    container.register { try ResolvableServer(client: self.container.resolve()) as Server }
-      .resolvingProperties { (container: DependencyContainer, server: Server) in
-        let server = server as! ResolvableServer
-        server.secondClient = try container.resolve() as Client
-    }
+      .resolvingProperty(\ResolvableServer.secondClient, as: Client.self)
    
    container.register { ResolvableClient() as Client }
-      .resolvingProperties { (container: DependencyContainer, client: Client) in
-        let client = client as! ResolvableClient
-        client.server = try container.resolve() as Server
-        client.secondServer = try container.resolve() as Server
-    }
+      .resolvingProperty(\ResolvableClient.server, factory: { try $0.resolve() })
+      .resolvingProperty(\ResolvableClient.secondServer)

    //when
    let client = (try! container.resolve() as Client) as! ResolvableClient
@@ -581,17 +522,17 @@ class DipTests: XCTestCase {
      }.implements(Service.self)
    
    container.register(tag: "tag") { ServiceImp2() as Service }
-      .resolvingProperties { _ in
+      .resolvingProperties { _,_  in
        createdService2 = true
    }
    
    container.register { (arg: String) in ServiceImp1() }
-      .resolvingProperties { _ in
+      .resolvingProperties { _,_  in
        createdService3 = true
    }
    
    //then
-    AssertNoThrow(expression: try container.validate("arg"))
+    XCTAssertNoThrow(try self.container.validate("arg"))
    XCTAssertTrue(createdService1)
    XCTAssertTrue(createdService2)
    XCTAssertTrue(createdService3)
@@ -614,8 +555,8 @@ class DipTests: XCTestCase {
    }
    
    //then
-    AssertNoThrow(expression:
-      try container.validate(
+    XCTAssertNoThrow(
+      try self.container.validate(
        "1",
        expectedIntArgument,
        "x",
@@ -630,8 +571,18 @@ class DipTests: XCTestCase {
    container.register { (a: Int) -> Service in ServiceImp1() as Service }
    
    //then
-    AssertThrows(expression: try container.validate()) { error in error is DipError }
-    AssertThrows(expression: try container.validate("1")) { error in error is DipError }
+    XCTAssertThrowsError(try self.container.validate()) { error in
+      guard error is DipError else {
+        XCTFail("Thrown unexpected error: \(error)")
+        return
+      }
+    }
+    XCTAssertThrowsError(try self.container.validate("1")) { error in
+      guard error is DipError else {
+        XCTFail("Thrown unexpected error: \(error)")
+        return
+      }
+    }
  }
  
  func testThatItFailsValidationOnlyForDipErrors() {
@@ -643,7 +594,7 @@ class DipTests: XCTestCase {
    }
    
    //then
-    AssertNoThrow(expression: try container.validate())
+    XCTAssertNoThrow(try self.container.validate())
    
    //given
    let key = DefinitionKey(type: Service.self, typeOfArguments: Void.self, tag: nil)
@@ -652,9 +603,11 @@ class DipTests: XCTestCase {
    }
    
    //then
-    AssertThrows(expression: try container.validate()) { error in
-      if case let DipError.definitionNotFound(_key) = error, _key == key { return true }
-      else { return false }
+    XCTAssertThrowsError(try self.container.validate()) { error in
+      guard case let DipError.definitionNotFound(_key) = error, _key == key else {
+        XCTFail("Thrown unexpected error: \(error)")
+        return
+      }
    }
  }
  
@@ -666,20 +619,22 @@ extension DipTests {
    //given
    let collaborator = DependencyContainer()
    collaborator.register { ResolvableService() as Service }
+    container.register { "something" }

    //when
    container.collaborate(with: collaborator)
    
    //then
-    AssertNoThrow(expression: try container.resolve() as Service)
-    AssertNoThrow(expression: try container.resolve(Service.self))
+    XCTAssertNoThrow(try self.container.resolve() as Service)
+    XCTAssertNoThrow(try self.container.resolve(Service.self))
+    XCTAssertNoThrow(try collaborator.resolve() as String)
+    XCTAssertNoThrow(try collaborator.resolve(String.self))
  }
  
  func testThatCollaboratingWithSelfIsIgnored() {
    let collaborator = DependencyContainer()
    collaborator.collaborate(with: collaborator)
    XCTAssertTrue(collaborator._collaborators.isEmpty, "Container should not collaborate with itself")
-    
  }
  
  func testThatCollaboratingContainersAreWeakReferences() {
@@ -698,21 +653,13 @@ extension DipTests {
  func testThatCollaboratingContainersReuseInstancesResolvedByAnotherContainer() {
    //given
    class ServerImp: Server {
-      weak var client: Client?
+      weak var client: Client!
      init(client: Client) { self.client = client }
    }
    
-    //Due to a bug in Swift 3 Mirror fails if weak property is not NSObject
-    //https://bugs.swift.org/browse/SR-2144
-    class ClientImp: NSObject, Client {
-      var server: Server?
-      var anotherServer: Server?
-
-      #if os(Linux)
-      init() {}
-      #else
-      override init() { super.init() }
-      #endif
+    class ClientImp: Client {
+      var server: Server!
+      var anotherServer: Server!
    }
    
    let serverContainer = DependencyContainer()
@@ -746,4 +693,188 @@ extension DipTests {
    XCTAssertTrue(client?.server === (client as? ClientImp)?.anotherServer)
  }
  
+  func testThatCollaborationReferencesAreRecursivelyUpdate() {
+    let container = DependencyContainer()
+    container.register(.singleton){ ResolvableService() as Service }
+    
+    //when
+    let collaborator1 = DependencyContainer()
+    let collaborator2 = DependencyContainer()
+    let collaborator3 = DependencyContainer()
+    let collaborator4 = DependencyContainer()
+    
+    collaborator1.collaborate(with: container)
+    XCTAssertTrue(collaborator1.resolvedInstances.sharedSingletonsBox === container.resolvedInstances.sharedSingletonsBox)
+
+    collaborator2.collaborate(with: container)
+    XCTAssertTrue(collaborator2.resolvedInstances.sharedSingletonsBox === container.resolvedInstances.sharedSingletonsBox)
+
+    collaborator3.collaborate(with: collaborator1)
+    XCTAssertTrue(collaborator3.resolvedInstances.sharedSingletonsBox === container.resolvedInstances.sharedSingletonsBox)
+
+    collaborator4.collaborate(with: collaborator2)
+    XCTAssertTrue(collaborator4.resolvedInstances.sharedSingletonsBox === container.resolvedInstances.sharedSingletonsBox)
+    
+    let service1 = try! collaborator1.resolve() as Service
+    let service2 = try! collaborator2.resolve() as Service
+    let service3 = try! collaborator3.resolve() as Service
+    let service4 = try! collaborator4.resolve() as Service
+    let serviceRoot = try! container.resolve() as Service
+    
+    XCTAssertTrue(service1 === service2)
+    XCTAssertTrue(service1 === service3)
+    XCTAssertTrue(service1 === service4)
+    
+    XCTAssertTrue(service1 === serviceRoot)
+    XCTAssertTrue(service2 === serviceRoot)
+    XCTAssertTrue(service3 === serviceRoot)
+    XCTAssertTrue(service4 === serviceRoot)
+  }
+
+  class RootService {}
+  class ServiceClient {
+    let name: String
+    let service: RootService
+    init(name: String, service: RootService) {
+      self.name = name
+      self.service = service
+    }
+  }
+
+  func testThatContainersShareTheirSingletonsOnlyWithCollaborators() {
+    let container = DependencyContainer()
+    container.register(.singleton) { RootService() }
+    
+    let collaborator1 = DependencyContainer()
+    collaborator1.register(.singleton) {
+      ServiceClient(name: "1", service: $0)
+    }
+    
+    let collaborator2 = DependencyContainer()
+    collaborator2.register(.singleton) {
+      ServiceClient(name: "2", service: $0)
+    }
+    
+    collaborator1.collaborate(with: container)
+    collaborator2.collaborate(with: container)
+    
+    let client2 = try! collaborator2.resolve() as ServiceClient
+    let client1 = try! collaborator1.resolve() as ServiceClient
+    
+    XCTAssertEqual(client1.name, "1")
+    XCTAssertEqual(client2.name, "2")
+    XCTAssertTrue(client1.service === client2.service)
+  }
+
+  func testThatContainerAutowireBeforeCollaboration() {
+    let container = DependencyContainer()
+    container.register(.singleton) { RootService() }
+    
+    let collaborator1 = DependencyContainer()
+    collaborator1.register(.singleton) {
+      ServiceClient(name: "1", service: $0)
+    }
+    
+    let collaborator2 = DependencyContainer()
+    collaborator2.register(.singleton) {
+      ServiceClient(name: "2", service: $0)
+    }
+    
+    collaborator1.collaborate(with: container, collaborator2)
+    collaborator2.collaborate(with: container, collaborator1)
+    
+    let client2 = try! collaborator2.resolve() as ServiceClient
+    let client1 = try! collaborator1.resolve() as ServiceClient
+    
+    XCTAssertEqual(client1.name, "1")
+    XCTAssertEqual(client2.name, "2")
+    XCTAssertTrue(client1.service === client2.service)
+  }
+}
+
+class Manager {}
+class AnotherManager {}
+
+class Object {
+  let manager: Manager?
+  
+  init(with container: DependencyContainer) {
+    self.manager = try? container.resolve()
+  }
+}
+
+class Owner {
+  var manager: Manager?
+}
+
+extension DipTests {
+  func testThatItCanHandleSeparateContainersAndTheirCollaboration() {
+    let container = self.container
+    
+    let anotherContainer = DependencyContainer()
+    anotherContainer.register { Object(with: anotherContainer) }
+    
+    container.collaborate(with: anotherContainer)
+    
+    container
+      .register { Owner() }
+      .resolvingProperties { $1.manager = try $0.resolve() }
+    
+    container.register(.singleton) { AnotherManager() }
+    container.register(.singleton) { Manager() }
+    
+    let manager: Manager? = try? container.resolve()
+    let another: AnotherManager? = try? container.resolve()
+    var owner: Owner? = try? container.resolve(arguments: 1, "")
+    
+    let object: Object? = try? container.resolve()
+    owner = try? container.resolve()
+    
+    let nonNilValues: [Any?] = [another, manager, owner, object, object?.manager]
+    nonNilValues.forEach { XCTAssertNotNil($0) }
+    
+    XCTAssertTrue(
+      owner?.manager
+        .flatMap { value in
+          manager.flatMap { $0 === value }
+        }
+        ?? false
+    )
+  }
+}
+
+extension DipTests {
+  // https://bugs.swift.org/browse/SR-8878
+  func test_weak_mirror_regression() {
+    class A {
+      static var released = false
+      deinit {
+        A.released = true
+      }
+    }
+    class B {
+      static var released = false
+      weak var a: A?
+      init(a: A) {
+        self.a = a
+      }
+      deinit {
+        B.released = true
+      }
+    }
+    let container = DependencyContainer()
+    let tag = "my_tag"
+    container.register(.unique, tag: tag, factory: B.init(a:))
+    do {
+      let a0 = A()
+      let _: B = try container.resolve(tag: tag, arguments: a0)
+
+
+      XCTAssertTrue(B.released)
+      // Due to regression in swift 4.2 Mirror retains weak children
+      // https://bugs.swift.org/browse/SR-8878
+      XCTAssertFalse(A.released)
+    } catch {
+    }
+  }
 }
@@ -0,0 +1,252 @@
+//
+// DipUI
+//
+// Copyright (c) 2016 Ilya Puchka <ilyapuchka@gmail.com>
+//
+// Permission is hereby granted, free of charge, to any person obtaining a copy
+// of this software and associated documentation files (the "Software"), to deal
+// in the Software without restriction, including without limitation the rights
+// to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+// copies of the Software, and to permit persons to whom the Software is
+// furnished to do so, subject to the following conditions:
+//
+// The above copyright notice and this permission notice shall be included in
+// all copies or substantial portions of the Software.
+//
+// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+// OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+// THE SOFTWARE.
+//
+
+#if (canImport(UIKit) || canImport(AppKit)) && !SWIFT_PACKAGE
+
+import XCTest
+@testable import Dip
+
+#if canImport(UIKit)
+  import UIKit
+  typealias Storyboard = UIStoryboard
+  typealias ViewController = UIViewController
+  typealias StoryboardName = String
+  
+  extension UIStoryboard {
+    @nonobjc
+    @discardableResult func instantiateViewControllerWithIdentifier(_ identifier: String) -> UIViewController {
+      return instantiateViewController(withIdentifier: identifier)
+    }
+  }
+
+#else
+  import AppKit
+  typealias Storyboard = NSStoryboard
+  typealias ViewController = NSViewController
+  typealias StoryboardName = NSStoryboard.Name
+  
+  extension NSStoryboard {
+    @discardableResult func instantiateViewControllerWithIdentifier(_ identifier: String) -> NSViewController {
+      return instantiateController(withIdentifier: NSStoryboard.SceneIdentifier(identifier)) as! NSViewController
+    }
+  }
+  
+#endif
+
+#if os(iOS)
+  let storyboardName: StoryboardName = "UIStoryboard"
+#elseif os(tvOS)
+  let storyboardName: StoryboardName = "TVStoryboard"
+#else
+  let storyboardName: StoryboardName = StoryboardName("NSStoryboard")
+#endif
+
+class DipViewController: ViewController, StoryboardInstantiatable {}
+class NilTagViewController: ViewController, StoryboardInstantiatable {}
+
+class DipUITests: XCTestCase {
+  
+  let storyboard: Storyboard = {
+    let bundle = Bundle(for: DipUITests.self)
+    return Storyboard(name: storyboardName, bundle: bundle)
+  }()
+  
+  func testThatViewControllerHasDipTagProperty() {
+    let viewController = storyboard.instantiateViewControllerWithIdentifier("DipViewController")
+    XCTAssertEqual(viewController.dipTag, "vc")
+  }
+  
+  func testThatItDoesNotResolveIfContainerIsNotSet() {
+    let container = DependencyContainer()
+    container.register(tag: "vc") { ViewController() }
+      .resolvingProperties { _, _ in
+        XCTFail("Should not resolve when container is not set.")
+    }
+    
+    storyboard.instantiateViewControllerWithIdentifier("DipViewController")
+  }
+  
+  func testThatItDoesNotResolveIfTagIsNotSet() {
+    let container = DependencyContainer()
+    container.register(tag: "vc") { ViewController() }
+      .resolvingProperties { _, _ in
+        XCTFail("Should not resolve when container is not set.")
+    }
+    
+    DependencyContainer.uiContainers = [container]
+    storyboard.instantiateViewControllerWithIdentifier("ViewController")
+  }
+
+  func testThatItResolvesIfContainerAndStringTagAreSet() {
+    var resolved = false
+    let container = DependencyContainer()
+    container.register(storyboardType: DipViewController.self, tag: "vc")
+      .resolvingProperties { _, _ in
+        resolved = true
+    }
+    
+    DependencyContainer.uiContainers = [container]
+    storyboard.instantiateViewControllerWithIdentifier("DipViewController")
+    XCTAssertTrue(resolved, "Should resolve when container and tag are set.")
+  }
+
+  func testThatItResolvesIfContainerAndNilTagAreSet() {
+    var resolved = false
+    let container = DependencyContainer()
+    container.register(storyboardType: NilTagViewController.self)
+      .resolvingProperties { _, _ in
+        resolved = true
+    }
+    
+    DependencyContainer.uiContainers = [container]
+    storyboard.instantiateViewControllerWithIdentifier("NilTagViewController")
+    XCTAssertTrue(resolved, "Should resolve when container and nil tag are set.")
+  }
+
+  func testThatItDoesNotResolveIfTagDoesNotMatch() {
+    let container = DependencyContainer()
+    container.register(storyboardType: DipViewController.self, tag: "wrong tag")
+      .resolvingProperties { _, _ in
+        XCTFail("Should not resolve when container is not set.")
+    }
+    
+    DependencyContainer.uiContainers = [container]
+    storyboard.instantiateViewControllerWithIdentifier("DipViewController")
+  }
+  
+  func testThatItResolvesWithDefinitionWithNoTag() {
+    var resolved = false
+    let container = DependencyContainer()
+    container.register(storyboardType: DipViewController.self)
+      .resolvingProperties { _, _ in
+        resolved = true
+    }
+    
+    DependencyContainer.uiContainers = [container]
+    storyboard.instantiateViewControllerWithIdentifier("DipViewController")
+    XCTAssertTrue(resolved, "Should fallback to definition with no tag.")
+  }
+  
+  func testThatItIteratesUIContainers() {
+    var resolved = false
+    let container1 = DependencyContainer()
+    let container2 = DependencyContainer()
+    container2.register(storyboardType: DipViewController.self, tag: "vc")
+      .resolvingProperties { container, _ in
+        XCTAssertTrue(container === container2)
+        resolved = true
+    }
+    
+    DependencyContainer.uiContainers = [container1, container2]
+    storyboard.instantiateViewControllerWithIdentifier("DipViewController")
+    XCTAssertTrue(resolved, "Should resolve using second container")
+  }
+}
+
+protocol SomeService: class {
+  var delegate: SomeServiceDelegate? { get set }
+}
+protocol SomeServiceDelegate: class { }
+class SomeServiceImp: SomeService {
+  weak var delegate: SomeServiceDelegate?
+  init(delegate: SomeServiceDelegate) {
+    self.delegate = delegate
+  }
+  init(){}
+}
+
+protocol OtherService: class {
+  var delegate: OtherServiceDelegate? { get set }
+}
+protocol OtherServiceDelegate: class {}
+class OtherServiceImp: OtherService {
+  weak var delegate: OtherServiceDelegate?
+  init(delegate: OtherServiceDelegate){
+    self.delegate = delegate
+  }
+  init(){}
+}
+
+
+protocol SomeScreen: class {
+  var someService: SomeService? { get set }
+  var otherService: OtherService? { get set }
+}
+
+class ViewControllerImp: SomeScreen, SomeServiceDelegate, OtherServiceDelegate {
+  var someService: SomeService?
+  var otherService: OtherService?
+  init(){}
+}
+
+extension DipUITests {
+  
+  func testThatItDoesNotCreateNewInstanceWhenResolvingDependenciesOfExternalInstance() {
+    let container = DependencyContainer()
+    
+    //given
+    var factoryCalled = false
+    container.register(.shared) { () -> SomeScreen in
+      factoryCalled = true
+      return ViewControllerImp() as SomeScreen
+    }
+    
+    //when
+    let screen = ViewControllerImp()
+    try! container.resolveDependencies(of: screen as SomeScreen)
+    
+    //then
+    XCTAssertFalse(factoryCalled, "Container should not create new instance when resolving dependencies of external instance.")
+  }
+  
+  func testThatItResolvesInstanceThatImplementsSeveralProtocols() {
+    let container = DependencyContainer()
+
+    //given
+    container.register(.shared) { ViewControllerImp() as SomeScreen }
+      .resolvingProperties { container, resolved in
+        
+        //manually provide resolved instance for the delegate properties
+        resolved.someService = try container.resolve() as SomeService
+        resolved.someService?.delegate = resolved as? SomeServiceDelegate
+        resolved.otherService = try container.resolve(arguments: resolved as! OtherServiceDelegate) as OtherService
+    }
+    
+    container.register(.shared) { SomeServiceImp() as SomeService }
+    container.register(.shared) { OtherServiceImp(delegate: $0) as OtherService }
+    
+    //when
+    let screen = try! container.resolve() as SomeScreen
+    
+    //then
+    XCTAssertNotNil(screen.someService)
+    XCTAssertNotNil(screen.otherService)
+    
+    XCTAssertTrue(screen.someService?.delegate === screen)
+    XCTAssertTrue(screen.otherService?.delegate === screen)
+  }
+  
+}
+
+#endif
@@ -51,22 +51,6 @@ class RuntimeArgumentsTests: XCTestCase {
  
  let container = DependencyContainer()
 
-  static var allTests = {
-    return [
-      ("testThatItResolvesInstanceWithOneArgument", testThatItResolvesInstanceWithOneArgument),
-      ("testThatItResolvesInstanceWithTwoArguments", testThatItResolvesInstanceWithTwoArguments),
-      ("testThatItResolvesInstanceWithThreeArguments", testThatItResolvesInstanceWithThreeArguments),
-      ("testThatItResolvesInstanceWithFourArguments", testThatItResolvesInstanceWithFourArguments),
-      ("testThatItResolvesInstanceWithFiveArguments", testThatItResolvesInstanceWithFiveArguments),
-      ("testThatItResolvesInstanceWithSixArguments", testThatItResolvesInstanceWithSixArguments),
-      ("testThatItRegistersDifferentFactoriesForDifferentNumberOfArguments", testThatItRegistersDifferentFactoriesForDifferentNumberOfArguments),
-      ("testThatItRegistersDifferentFactoriesForDifferentTypesOfArguments", testThatItRegistersDifferentFactoriesForDifferentTypesOfArguments),
-      ("testThatItRegistersDifferentFactoriesForDifferentOrderOfArguments", testThatItRegistersDifferentFactoriesForDifferentOrderOfArguments),
-      ("testThatNewRegistrationWithSameArgumentsOverridesPreviousRegistration", testThatNewRegistrationWithSameArgumentsOverridesPreviousRegistration),
-      ("testThatDifferentFactoriesRegisteredIfArgumentIsOptional", testThatDifferentFactoriesRegisteredIfArgumentIsOptional)
-    ]
-  }()
-
  override func setUp() {
    container.reset()
  }
@@ -290,7 +274,7 @@ class RuntimeArgumentsTests: XCTestCase {

 //    let name3 = "3"
 //    container.register { (port: Int, url: String!) in ServiceImp(name: name3, baseURL: url, port: port) as Service }
-//    let service3 = try! container.resolve(withArguments: 80, "http://example.com" as String!) as Service
+//    let service3 = try! container.resolve(arguments: 80, "http://example.com" as String!) as Service
 //    XCTAssertEqual(service3.name, name3)
  }
  
@@ -22,11 +22,12 @@
 // THE SOFTWARE.
 //

+#if canImport(ObjectiveC)
 import XCTest
@testable import Dip

 private protocol Server: class {
-  var client: Client? { get set }
+  var client: Client! { get set }
 }

 private protocol Client: class {
@@ -45,11 +46,11 @@ private func ==<T: ClientImp>(lhs: T, rhs: T) -> Bool {
 }

 private class ServerImp: Server, Hashable {
-  weak var client: Client?
+  weak var client: Client!
  init() {}
  
-  var hashValue: Int {
-    return Unmanaged.passUnretained(self).toOpaque().hashValue
+  func hash(into hasher: inout Hasher) {
+    hasher.combine(ObjectIdentifier(self))
  }
 }

@@ -62,22 +63,6 @@ private var resolvedClients = Array<ClientImp>()

 private var container: DependencyContainer!

-#if os(Linux)
-import Glibc
-  
-private var runningThreads: Int = 0
-private var lock: pthread_spinlock_t = 0
-
-private let resolveClientSync: () -> Client? = {
-  let pointer = dispatch_sync { _ in
-    let resolved = try! container.resolve() as Client
-    return UnsafeMutableRawPointer(Unmanaged.passRetained(resolved as! ClientImp).toOpaque())
-  }
-  guard let clientPointer = pointer else { return nil }
-  return Unmanaged<ClientImp>.fromOpaque(clientPointer).takeRetainedValue()
-}
-  
-#else
 let queue = OperationQueue()
 let lock = RecursiveLock()
  
@@ -88,18 +73,11 @@ private let resolveClientSync: () -> Client? = {
  }
  return client
 }
-  
-#endif

 let resolveServerAsync = {
  let server = try! container.resolve() as Server
  lock.lock()
  resolvedServers.insert(server as! ServerImp)
-
-  #if os(Linux)
-    runningThreads -= 1
-  #endif
-
  lock.unlock()
 }

@@ -107,31 +85,11 @@ let resolveClientAsync = {
  let client = try! container.resolve() as Client
  lock.lock()
  resolvedClients.append(client as! ClientImp)
-
-  #if os(Linux)
-    runningThreads -= 1
-  #endif
-
  lock.unlock()
 }

 class ThreadSafetyTests: XCTestCase {
  
-  #if os(Linux)
-  required init(name: String, testClosure: @escaping (XCTestCase) throws -> Void) {
-    pthread_spin_init(&lock, 0)
-    super.init(name: name, testClosure: testClosure)
-  }
-  #endif
-  
-  static var allTests = {
-    return [
-      ("testSingletonThreadSafety", testSingletonThreadSafety),
-      ("testFactoryThreadSafety", testFactoryThreadSafety),
-      ("testCircularReferenceThreadSafety", testCircularReferenceThreadSafety)
-    ]
-  }()
-  
  override func setUp() {
    Dip.logLevel = .Verbose
    container = DependencyContainer()
@@ -146,25 +104,10 @@ class ThreadSafetyTests: XCTestCase {
    container.register(.singleton) { ServerImp() as Server }
    
    for _ in 0..<100 {
-      #if os(Linux)
-      lock.lock()
-      runningThreads += 1
-      lock.unlock()
-        
-      dispatch_async { _ in
-        resolveServerAsync()
-        return nil
-      }
-      #else
      queue.addOperation(resolveServerAsync)
-      #endif
    }
    
-    #if os(Linux)
-    while runningThreads > 0 { sleep(1) }
-    #else
    queue.waitUntilAllOperationsAreFinished()
-    #endif
    
    XCTAssertEqual(resolvedServers.count, 1, "Should create only one instance")
  }
@@ -174,25 +117,10 @@ class ThreadSafetyTests: XCTestCase {
    container.register { ServerImp() as Server }
    
    for _ in 0..<100 {
-      #if os(Linux)
-      lock.lock()
-      runningThreads += 1
-      lock.unlock()
-
-      dispatch_async { _ in
-        resolveServerAsync()
-        return nil
-      }
-      #else
      queue.addOperation(resolveServerAsync)
-      #endif
    }
    
-    #if os(Linux)
-    while runningThreads > 0 { sleep(1) }
-    #else
    queue.waitUntilAllOperationsAreFinished()
-    #endif

    XCTAssertEqual(resolvedServers.count, 100, "All instances should be different")
  }
@@ -209,25 +137,10 @@ class ThreadSafetyTests: XCTestCase {
    }
    
    for _ in 0..<100 {
-      #if os(Linux)
-      lock.lock()
-      runningThreads += 1
-      lock.unlock()
-
-      dispatch_async { _ in
-        resolveClientAsync()
-        return nil
-      }
-      #else
      queue.addOperation(resolveClientAsync)
-      #endif
    }
    
-    #if os(Linux)
-    while runningThreads > 0 { sleep(1) }
-    #else
    queue.waitUntilAllOperationsAreFinished()
-    #endif
    
    XCTAssertEqual(resolvedClients.count, 100, "Instances should be not reused in different object graphs")
    for client in resolvedClients {
@@ -238,5 +151,4 @@ class ThreadSafetyTests: XCTestCase {
  }
  
 }
-
-
+#endif
@@ -27,29 +27,36 @@ import XCTest

 private protocol Service: class { }
 private protocol ForwardedType: class { }
+#if os(Linux)
+private class ServiceImp1: Service, ForwardedType { }
+private class ServiceImp2: Service, ForwardedType { }
+#else
 private class ServiceImp1: NSObject, Service, ForwardedType { }
 private class ServiceImp2: NSObject, Service, ForwardedType { }
+#endif
+
+private protocol Dependency {}
+private struct DependencyImpl: Dependency {}
+private class DependencyRefImpl: Dependency {}
+
+private struct DependencyClient {
+  let dep: Dependency
+  init(dependency: Dependency) {
+    self.dep = dependency
+  }
+}
+
+private struct OptionalDependencyClient {
+  let dep: Dependency?
+  init(dependency: Dependency?) {
+    self.dep = dependency
+  }
+}
+

 class TypeForwardingTests: XCTestCase {
  
  let container = DependencyContainer()
-
-  static var allTests = {
-    return [
-      ("testThatItResolvesInstanceByTypeForwarding", testThatItResolvesInstanceByTypeForwarding),
-      ("testThatItReusesInstanceResolvedByTypeForwarding", testThatItReusesInstanceResolvedByTypeForwarding),
-      ("testThatItDoesNotResolveByTypeForwardingIfRegisteredForAnotherTag", testThatItDoesNotResolveByTypeForwardingIfRegisteredForAnotherTag),
-      ("testThatItDoesNotReuseInstanceResolvedByTypeForwardingRegisteredForAnotherTag",  testThatItDoesNotReuseInstanceResolvedByTypeForwardingRegisteredForAnotherTag),
-      ("testThatItCallsResolvedDependenciesBlockWhenResolvingByTypeForwarding", testThatItCallsResolvedDependenciesBlockWhenResolvingByTypeForwarding),
-      ("testThatItCallsResolvedDependenciesBlockProvidedAfterRegistrationWhenResolvingByTypeForwarding",testThatItCallsResolvedDependenciesBlockProvidedAfterRegistrationWhenResolvingByTypeForwarding),
-      ("testThatItFallbackToDefinitionWithNoTagWhenResolvingInstanceByTypeForwarding", testThatItFallbackToDefinitionWithNoTagWhenResolvingInstanceByTypeForwarding),
-      ("testThatItCanResolveOptional", testThatItCanResolveOptional),
-      ("testThatItFirstUsesTaggedDefinitionWhenResolvingOptional", testThatItFirstUsesTaggedDefinitionWhenResolvingOptional),
-      ("testThatItThrowsErrorWhenResolvingNotImplementedTypeWithTypeForwarding", testThatItThrowsErrorWhenResolvingNotImplementedTypeWithTypeForwarding),
-      ("testThatItOverridesIfSeveralDefinitionsWithTheSameTagForwardTheSameType", testThatItOverridesIfSeveralDefinitionsWithTheSameTagForwardTheSameType),
-      ("testThatItDoesNotOverrideIfDefinitionForwardsTheSameTypeWithDifferentTag", testThatItDoesNotOverrideIfDefinitionForwardsTheSameTypeWithDifferentTag)
-    ]
-  }()
  
  override func setUp() {
    container.reset()
@@ -109,15 +116,15 @@ class TypeForwardingTests: XCTestCase {
    def.implements(ForwardedType.self, tag: "otherTag")
    
    //then
-    AssertThrows(expression: try container.resolve(tag: "tag") as ForwardedType)
-    AssertThrows(expression: try container.resolve(ForwardedType.self, tag: "tag"))
+    XCTAssertThrowsError(try self.container.resolve(tag: "tag") as ForwardedType)
+    XCTAssertThrowsError(try self.container.resolve(ForwardedType.self, tag: "tag"))
    
    //and given
    def.implements(ForwardedType.self, tag: "tag")
    
    //then
-    AssertNoThrow(expression: try container.resolve(tag: "tag") as ForwardedType)
-    AssertNoThrow(expression: try container.resolve(ForwardedType.self, tag: "tag"))
+    XCTAssertNoThrow(try self.container.resolve(tag: "tag") as ForwardedType)
+    XCTAssertNoThrow(try self.container.resolve(ForwardedType.self, tag: "tag"))
  }
  
  func testThatItDoesNotReuseInstanceResolvedByTypeForwardingRegisteredForAnotherTag() {
@@ -154,9 +161,9 @@ class TypeForwardingTests: XCTestCase {
    var originalResolvingPropertiesCalled = false
    var resolvingPropertiesCalled = false
    container.register { ServiceImp1() }
-      .resolvingProperties { _ in
+      .resolvingProperties { _,_  in
        originalResolvingPropertiesCalled = true
-      }.implements(Service.self) { _ in
+      }.implements(Service.self) { _,_ in
        resolvingPropertiesCalled = true
      }
    
@@ -184,11 +191,11 @@ class TypeForwardingTests: XCTestCase {
    var resolvingPropertiesCalled = false
    container.reset()
    let definition = container.register { ServiceImp1() }
-      .implements(Service.self) { container, object in
+      .implements(Service.self) { _,_ in
        resolvingPropertiesCalled = true
    }
    
-    definition.resolvingProperties { _ in
+    definition.resolvingProperties { _,_  in
      originalResolvingPropertiesCalled = true
    }
    
@@ -252,6 +259,35 @@ class TypeForwardingTests: XCTestCase {
    XCTAssertTrue(object is ServiceImp1)
    XCTAssertTrue(anyObject is ServiceImp1)
  }
+
+  func testThatItReusesInstancesResolvedForOptionalType() {
+    var alreadyResolved = false
+    container.register(.singleton) { () -> Dependency in
+      XCTAssertFalse(alreadyResolved)
+      return DependencyImpl() as Dependency
+    }
+    container.register() { DependencyClient(dependency: try! self.container.resolve()) }
+    container.register() { OptionalDependencyClient(dependency: try! self.container.resolve()) }
+
+    let _ = try! container.resolve() as OptionalDependencyClient
+    let _ = try! container.resolve() as DependencyClient
+
+    alreadyResolved = false
+
+    let _ = try! container.resolve() as DependencyClient
+    let _ = try! container.resolve() as OptionalDependencyClient
+
+    container.register(.singleton) { () -> Dependency in
+      XCTAssertFalse(alreadyResolved)
+      return DependencyRefImpl() as Dependency
+    }
+
+    let client1 = try! container.resolve() as DependencyClient
+    let client2 = try! container.resolve() as OptionalDependencyClient
+
+    XCTAssertTrue(client1.dep as! DependencyRefImpl === client2.dep as! DependencyRefImpl)
+  }
+
  
  func testThatItFirstUsesTaggedDefinitionWhenResolvingOptional() {
    let expectedTag: DependencyContainer.Tag = .String("tag")
@@ -276,19 +312,23 @@ class TypeForwardingTests: XCTestCase {
      .implements(ServiceImp2.self)
    
    //then
-    AssertThrows(expression: try container.resolve() as ServiceImp2) { error in
-      guard case let DipError.invalidType(_, key) = error else { return false }
+    XCTAssertThrowsError(try self.container.resolve() as ServiceImp2) { error in
+      guard case let DipError.invalidType(_, key) = error else {
+        XCTFail("Thrown unexpected error: \(error)")
+        return
+      }
      
      let expectedKey = DefinitionKey(type: ServiceImp2.self, typeOfArguments: Void.self, tag: nil)
      XCTAssertEqual(key, expectedKey)
-      return true
    }
-    AssertThrows(expression: try container.resolve(ServiceImp2.self)) { error in
-      guard case let DipError.invalidType(_, key) = error else { return false }
+    XCTAssertThrowsError(try self.container.resolve(ServiceImp2.self)) { error in
+      guard case let DipError.invalidType(_, key) = error else {
+        XCTFail("Thrown unexpected error: \(error)")
+        return
+      }
      
      let expectedKey = DefinitionKey(type: ServiceImp2.self, typeOfArguments: Void.self, tag: nil)
      XCTAssertEqual(key, expectedKey)
-      return true
    }
  }
  
@@ -28,41 +28,6 @@ import XCTest
  typealias NSObject = AnyObject
 #endif

-func AssertThrows<T>(_ file: StaticString = #file, line: UInt = #line, expression: @autoclosure () throws -> T) {
-  AssertThrows(file, line: line, expression: expression, "")
-}
-
-func AssertThrows<T>(_ file: StaticString = #file, line: UInt = #line, expression: @autoclosure () throws -> T, _ message: String) {
-  AssertThrows(expression: expression, checkError: { _ in true }, message)
-}
-
-func AssertThrows<T>(_ file: StaticString = #file, line: UInt = #line, expression: @autoclosure () throws -> T, checkError: (Error) -> Bool) {
-  AssertThrows(file, line: line, expression: expression, checkError: checkError, "")
-}
-
-func AssertThrows<T>(_ file: StaticString = #file, line: UInt = #line, expression: @autoclosure () throws -> T, checkError: (Error) -> Bool, _ message: String) {
-  do {
-    let _ = try expression()
-    XCTFail(message, file: file, line: line)
-  }
-  catch {
-    XCTAssertTrue(checkError(error), "Thrown unexpected error: \(error)", file: file, line: line)
-  }
-}
-
-func AssertNoThrow<T>(_ file: StaticString = #file, line: UInt = #line, expression: @autoclosure () throws -> T) {
-  AssertNoThrow(file, line: line, expression: expression, "")
-}
-
-func AssertNoThrow<T>(_ file: StaticString = #file, line: UInt = #line, expression: @autoclosure () throws -> T, _ message: String) {
-  do {
-    let _ = try expression()
-  }
-  catch {
-    XCTFail(message, file: file, line: line)
-  }
-}
-
 #if os(Linux)
 import Glibc
 typealias TMain = @convention(c) (UnsafeMutableRawPointer?) -> UnsafeMutableRawPointer?
@@ -78,7 +43,7 @@ func dispatch_async(block: @escaping TMain) -> pthread_t {
 }

 func dispatch_sync(block: @escaping TMain) -> UnsafeMutableRawPointer? {
-  var result: UnsafeMutableRawPointer? = UnsafeMutableRawPointer.allocate(bytes: 1, alignedTo: 0)
+  var result: UnsafeMutableRawPointer? = UnsafeMutableRawPointer.allocate(byteCount: 1, alignment: 0)
  let pid = startThread(block)
  pthread_join(pid, &result)
  return result
@@ -1,14 +0,0 @@
-import XCTest
-@testable import DipTests
-
-XCTMain([
-  testCase(DipTests.allTests),
-  testCase(DefinitionTests.allTests),
-  testCase(RuntimeArgumentsTests.allTests),
-  testCase(ComponentScopeTests.allTests),
-  testCase(AutoInjectionTests.allTests),
-//  testCase(ThreadSafetyTests.allTests),
-  testCase(AutoWiringTests.allTests),
-  testCase(ContextTests.allTests),
-  testCase(TypeForwardingTests.allTests)
-])
@@ -0,0 +1,202 @@
+#if !canImport(ObjectiveC)
+import XCTest
+
+extension AutoInjectionTests {
+    // DO NOT MODIFY: This is autogenerated, use:
+    //   `swift test --generate-linuxmain`
+    // to regenerate.
+    static let __allTests__AutoInjectionTests = [
+        ("testThatItAutoInjectsPropertyWithCollaboratingContainer", testThatItAutoInjectsPropertyWithCollaboratingContainer),
+        ("testThatItAutoInjectsWhenOverridenInDefinition", testThatItAutoInjectsWhenOverridenInDefinition),
+        ("testThatItCallsDidInjectOnAutoInjectedProperty", testThatItCallsDidInjectOnAutoInjectedProperty),
+        ("testThatItCallsResolveDependencyBlockWhenAutoInjecting", testThatItCallsResolveDependencyBlockWhenAutoInjecting),
+        ("testThatItDoesNotAutoInjectIfDisabledInContainer", testThatItDoesNotAutoInjectIfDisabledInContainer),
+        ("testThatItDoesNotAutoInjectIfDisabledInDefinition", testThatItDoesNotAutoInjectIfDisabledInDefinition),
+        ("testThatItDoesNotPassTagToAutoInjectedPropertyWithExplicitTag", testThatItDoesNotPassTagToAutoInjectedPropertyWithExplicitTag),
+        ("testThatItPassesTagToAutoInjectedProperty", testThatItPassesTagToAutoInjectedProperty),
+        ("testThatItResolvesAutoInjectedDependencies", testThatItResolvesAutoInjectedDependencies),
+        ("testThatItResolvesAutoInjectedSingletons", testThatItResolvesAutoInjectedSingletons),
+        ("testThatItResolvesInheritedDependencies", testThatItResolvesInheritedDependencies),
+        ("testThatItResolvesTaggedAutoInjectedProperties", testThatItResolvesTaggedAutoInjectedProperties),
+        ("testThatItReusesAutoInjectedInstancesOnNextResolveOrAutoInjection", testThatItReusesAutoInjectedInstancesOnNextResolveOrAutoInjection),
+        ("testThatItReusesResolvedAutoInjectedInstances", testThatItReusesResolvedAutoInjectedInstances),
+        ("testThatItThrowsErrorIfFailsToAutoInjectDependency", testThatItThrowsErrorIfFailsToAutoInjectDependency),
+        ("testThatNoErrorThrownWhenOptionalPropertiesAreNotAutoInjected", testThatNoErrorThrownWhenOptionalPropertiesAreNotAutoInjected),
+        ("testThatThereIsNoRetainCycleBetweenAutoInjectedCircularDependencies", testThatThereIsNoRetainCycleBetweenAutoInjectedCircularDependencies),
+    ]
+}
+
+extension AutoWiringTests {
+    // DO NOT MODIFY: This is autogenerated, use:
+    //   `swift test --generate-linuxmain`
+    // to regenerate.
+    static let __allTests__AutoWiringTests = [
+        ("testThatItCanAutoWireOptional", testThatItCanAutoWireOptional),
+        ("testThatItCanResolveWithAutoWiring", testThatItCanResolveWithAutoWiring),
+        ("testThatItDoesNotReuseInstancesResolvedWithAutoWiringWhenUsingAutoWiringAgainWithAnotherTag", testThatItDoesNotReuseInstancesResolvedWithAutoWiringWhenUsingAutoWiringAgainWithAnotherTag),
+        ("testThatItDoesNotTryToUseAutoWiringWhenCallingResolveWithArguments", testThatItDoesNotTryToUseAutoWiringWhenCallingResolveWithArguments),
+        ("testThatItDoesNotUseAutoWiringWhenFailedToResolveLowLevelDependency", testThatItDoesNotUseAutoWiringWhenFailedToResolveLowLevelDependency),
+        ("testThatItFallbackToNotTaggedFactoryWhenUsingAutoWire", testThatItFallbackToNotTaggedFactoryWhenUsingAutoWire),
+        ("testThatItPrefersTaggedFactoryWithDifferentNumberOfArgumentsWhenUsingAutoWire", testThatItPrefersTaggedFactoryWithDifferentNumberOfArgumentsWhenUsingAutoWire),
+        ("testThatItPrefersTaggedFactoryWithDifferentTypesOfArgumentsWhenUsingAutoWire", testThatItPrefersTaggedFactoryWithDifferentTypesOfArgumentsWhenUsingAutoWire),
+        ("testThatItReusesInstancesResolvedWithAutoWiringWhenUsingAutoWiringAgain", testThatItReusesInstancesResolvedWithAutoWiringWhenUsingAutoWiringAgain),
+        ("testThatItReusesInstancesResolvedWithAutoWiringWhenUsingAutoWiringAgainWithTheSameTag", testThatItReusesInstancesResolvedWithAutoWiringWhenUsingAutoWiringAgainWithTheSameTag),
+        ("testThatItReusesInstancesResolvedWithoutAutoWiringWhenUsingAutoWiringAgain", testThatItReusesInstancesResolvedWithoutAutoWiringWhenUsingAutoWiringAgain),
+        ("testThatItThrowsAmbiguityErrorWhenUsingAutoWire", testThatItThrowsAmbiguityErrorWhenUsingAutoWire),
+        ("testThatItUsesAutoWireFactoryWithMostNumberOfArguments", testThatItUsesAutoWireFactoryWithMostNumberOfArguments),
+        ("testThatItUsesTagToResolveDependenciesWithAutoWiringWith1Argument", testThatItUsesTagToResolveDependenciesWithAutoWiringWith1Argument),
+        ("testThatItUsesTagToResolveDependenciesWithAutoWiringWith2Arguments", testThatItUsesTagToResolveDependenciesWithAutoWiringWith2Arguments),
+        ("testThatItUsesTagToResolveDependenciesWithAutoWiringWith3Arguments", testThatItUsesTagToResolveDependenciesWithAutoWiringWith3Arguments),
+        ("testThatItUsesTagToResolveDependenciesWithAutoWiringWith4Arguments", testThatItUsesTagToResolveDependenciesWithAutoWiringWith4Arguments),
+        ("testThatItUsesTagToResolveDependenciesWithAutoWiringWith5Arguments", testThatItUsesTagToResolveDependenciesWithAutoWiringWith5Arguments),
+        ("testThatItUsesTagToResolveDependenciesWithAutoWiringWith6Arguments", testThatItUsesTagToResolveDependenciesWithAutoWiringWith6Arguments),
+    ]
+}
+
+extension ComponentScopeTests {
+    // DO NOT MODIFY: This is autogenerated, use:
+    //   `swift test --generate-linuxmain`
+    // to regenerate.
+    static let __allTests__ComponentScopeTests = [
+        ("testThatCollaboratingContainersReuseSingletonsResolvedByAnotherContainer", testThatCollaboratingContainersReuseSingletonsResolvedByAnotherContainer),
+        ("testThatContainerCanBeBootstrappedAgainAfterReset", testThatContainerCanBeBootstrappedAgainAfterReset),
+        ("testThatItDoesNotReuseInstanceInSharedScopeInNextResolve", testThatItDoesNotReuseInstanceInSharedScopeInNextResolve),
+        ("testThatItDoesNotReuseInstanceInSharedScopeResolvedForNilTagWhenResolvingForAnotherTag", testThatItDoesNotReuseInstanceInSharedScopeResolvedForNilTagWhenResolvingForAnotherTag),
+        ("testThatItHoldsWeakReferenceToWeakSingletonInstance", testThatItHoldsWeakReferenceToWeakSingletonInstance),
+        ("testThatItResolvesTypeAsNewInstanceForUniqueScope", testThatItResolvesTypeAsNewInstanceForUniqueScope),
+        ("testThatItResolvesWeakSingletonAgainAfterItWasReleased", testThatItResolvesWeakSingletonAgainAfterItWasReleased),
+        ("testThatItReusesInstanceForSingletonScope", testThatItReusesInstanceForSingletonScope),
+        ("testThatItReusesInstanceInSharedScopeDuringResolve", testThatItReusesInstanceInSharedScopeDuringResolve),
+        ("testThatItReusesInstanceInSharedScopeResolvedForNilTag", testThatItReusesInstanceInSharedScopeResolvedForNilTag),
+        ("testThatItReusesResolvedInstanceWhenResolvingOptional", testThatItReusesResolvedInstanceWhenResolvingOptional),
+        ("testThatOnlyEagerSingletonIsCreatedWhenContainerIsBootsrapped", testThatOnlyEagerSingletonIsCreatedWhenContainerIsBootsrapped),
+        ("testThatScopeCanBeChanged", testThatScopeCanBeChanged),
+        ("testThatSharedIsDefaultScope", testThatSharedIsDefaultScope),
+        ("testThatSingletonIsNotReusedAcrossContainers", testThatSingletonIsNotReusedAcrossContainers),
+        ("testThatSingletonIsReleasedWhenContainerIsReset", testThatSingletonIsReleasedWhenContainerIsReset),
+        ("testThatSingletonIsReleasedWhenDefinitionIsOverridden", testThatSingletonIsReleasedWhenDefinitionIsOverridden),
+        ("testThatSingletonIsReleasedWhenDefinitionIsRemoved", testThatSingletonIsReleasedWhenDefinitionIsRemoved),
+    ]
+}
+
+extension ContextTests {
+    // DO NOT MODIFY: This is autogenerated, use:
+    //   `swift test --generate-linuxmain`
+    // to regenerate.
+    static let __allTests__ContextTests = [
+        ("testThatContextDoesNotOverrideNilTagPassedToResolve", testThatContextDoesNotOverrideNilTagPassedToResolve),
+        ("testThatContextIsPreservedWhenResolvingWithCollaboration", testThatContextIsPreservedWhenResolvingWithCollaboration),
+        ("testThatContextStoresCurrentlyResolvedType", testThatContextStoresCurrentlyResolvedType),
+        ("testThatContextStoresInjectedInType", testThatContextStoresInjectedInType),
+        ("testThatContextStoresNameOfAutoInjectedProperty", testThatContextStoresNameOfAutoInjectedProperty),
+        ("testThatContextStoresTheTagPassedToResolve", testThatContextStoresTheTagPassedToResolve),
+        ("testThatContextStoresTheTagPassedToResolveWhenAutoInjecting", testThatContextStoresTheTagPassedToResolveWhenAutoInjecting),
+        ("testThatContextStoresTheTagPassedToResolveWhenAutoWiring", testThatContextStoresTheTagPassedToResolveWhenAutoWiring),
+        ("testThatItDoesNotSetInjectedInTypeWhenResolvingWithCollaboration", testThatItDoesNotSetInjectedInTypeWhenResolvingWithCollaboration),
+    ]
+}
+
+extension DefinitionTests {
+    // DO NOT MODIFY: This is autogenerated, use:
+    //   `swift test --generate-linuxmain`
+    // to regenerate.
+    static let __allTests__DefinitionTests = [
+        ("testThatDefinitionKeyIsEqualBy_Type_Factory_Tag", testThatDefinitionKeyIsEqualBy_Type_Factory_Tag),
+        ("testThatDefinitionKeysWithDifferentFactoriesAreNotEqual", testThatDefinitionKeysWithDifferentFactoriesAreNotEqual),
+        ("testThatDefinitionKeysWithDifferentTagsAreNotEqual", testThatDefinitionKeysWithDifferentTagsAreNotEqual),
+        ("testThatDefinitionKeysWithDifferentTypesAreNotEqual", testThatDefinitionKeysWithDifferentTypesAreNotEqual),
+        ("testThatItRegisteresOptionalTypesAsForwardedTypes", testThatItRegisteresOptionalTypesAsForwardedTypes),
+        ("testThatResolveDependenciesBlockIsNotCalledWhenPassedWrongInstance", testThatResolveDependenciesBlockIsNotCalledWhenPassedWrongInstance),
+        ("testThatResolveDependenciesCallsResolveDependenciesBlock", testThatResolveDependenciesCallsResolveDependenciesBlock),
+    ]
+}
+
+extension DipTests {
+    // DO NOT MODIFY: This is autogenerated, use:
+    //   `swift test --generate-linuxmain`
+    // to regenerate.
+    static let __allTests__DipTests = [
+        ("test_weak_mirror_regression", test_weak_mirror_regression),
+        ("testItCallsResolveDependenciesOnResolableInstance", testItCallsResolveDependenciesOnResolableInstance),
+        ("testThatCollaboratingContainersAreWeakReferences", testThatCollaboratingContainersAreWeakReferences),
+        ("testThatCollaboratingContainersReuseInstancesResolvedByAnotherContainer", testThatCollaboratingContainersReuseInstancesResolvedByAnotherContainer),
+        ("testThatCollaboratingWithSelfIsIgnored", testThatCollaboratingWithSelfIsIgnored),
+        ("testThatCollaborationReferencesAreRecursivelyUpdate", testThatCollaborationReferencesAreRecursivelyUpdate),
+        ("testThatContainerAutowireBeforeCollaboration", testThatContainerAutowireBeforeCollaboration),
+        ("testThatContainersShareTheirSingletonsOnlyWithCollaborators", testThatContainersShareTheirSingletonsOnlyWithCollaborators),
+        ("testThatCreatingContainerWithConfigBlockDoesNotCreateRetainCycle", testThatCreatingContainerWithConfigBlockDoesNotCreateRetainCycle),
+        ("testThatItCallsDidResolveDependenciesInReverseOrder", testThatItCallsDidResolveDependenciesInReverseOrder),
+        ("testThatItCallsDidResolveDependenciesOnResolvableIntance", testThatItCallsDidResolveDependenciesOnResolvableIntance),
+        ("testThatItCallsResolveDependenciesOnDefinition", testThatItCallsResolveDependenciesOnDefinition),
+        ("testThatItCanHandleSeparateContainersAndTheirCollaboration", testThatItCanHandleSeparateContainersAndTheirCollaboration),
+        ("testThatItCanResolveUsingContainersCollaboration", testThatItCanResolveUsingContainersCollaboration),
+        ("testThatItFailsValidationIfNoMatchingArgumentsFound", testThatItFailsValidationIfNoMatchingArgumentsFound),
+        ("testThatItFailsValidationOnlyForDipErrors", testThatItFailsValidationOnlyForDipErrors),
+        ("testThatItPicksRuntimeArgumentsWhenValidatingConfiguration", testThatItPicksRuntimeArgumentsWhenValidatingConfiguration),
+        ("testThatItResolvesCircularDependencies", testThatItResolvesCircularDependencies),
+        ("testThatItResolvesDifferentInstancesRegisteredForDifferentTags", testThatItResolvesDifferentInstancesRegisteredForDifferentTags),
+        ("testThatItResolvesInstanceRegisteredWithoutTag", testThatItResolvesInstanceRegisteredWithoutTag),
+        ("testThatItResolvesInstanceRegisteredWithTag", testThatItResolvesInstanceRegisteredWithTag),
+        ("testThatItThrowsErrorIfCanNotFindDefinitionForFactoryWithArguments", testThatItThrowsErrorIfCanNotFindDefinitionForFactoryWithArguments),
+        ("testThatItThrowsErrorIfCanNotFindDefinitionForTag", testThatItThrowsErrorIfCanNotFindDefinitionForTag),
+        ("testThatItThrowsErrorIfCanNotFindDefinitionForType", testThatItThrowsErrorIfCanNotFindDefinitionForType),
+        ("testThatItThrowsErrorIfConstructorThrows", testThatItThrowsErrorIfConstructorThrows),
+        ("testThatItThrowsErrorIfFailsToResolveDependency", testThatItThrowsErrorIfFailsToResolveDependency),
+        ("testThatItValidatesConfiguration", testThatItValidatesConfiguration),
+        ("testThatNewRegistrationOverridesPreviousRegistration", testThatNewRegistrationOverridesPreviousRegistration),
+    ]
+}
+
+extension RuntimeArgumentsTests {
+    // DO NOT MODIFY: This is autogenerated, use:
+    //   `swift test --generate-linuxmain`
+    // to regenerate.
+    static let __allTests__RuntimeArgumentsTests = [
+        ("testThatDifferentFactoriesRegisteredIfArgumentIsOptional", testThatDifferentFactoriesRegisteredIfArgumentIsOptional),
+        ("testThatItRegistersDifferentFactoriesForDifferentNumberOfArguments", testThatItRegistersDifferentFactoriesForDifferentNumberOfArguments),
+        ("testThatItRegistersDifferentFactoriesForDifferentOrderOfArguments", testThatItRegistersDifferentFactoriesForDifferentOrderOfArguments),
+        ("testThatItRegistersDifferentFactoriesForDifferentTypesOfArguments", testThatItRegistersDifferentFactoriesForDifferentTypesOfArguments),
+        ("testThatItResolvesInstanceWithFiveArguments", testThatItResolvesInstanceWithFiveArguments),
+        ("testThatItResolvesInstanceWithFourArguments", testThatItResolvesInstanceWithFourArguments),
+        ("testThatItResolvesInstanceWithOneArgument", testThatItResolvesInstanceWithOneArgument),
+        ("testThatItResolvesInstanceWithSixArguments", testThatItResolvesInstanceWithSixArguments),
+        ("testThatItResolvesInstanceWithThreeArguments", testThatItResolvesInstanceWithThreeArguments),
+        ("testThatItResolvesInstanceWithTwoArguments", testThatItResolvesInstanceWithTwoArguments),
+        ("testThatNewRegistrationWithSameArgumentsOverridesPreviousRegistration", testThatNewRegistrationWithSameArgumentsOverridesPreviousRegistration),
+    ]
+}
+
+extension TypeForwardingTests {
+    // DO NOT MODIFY: This is autogenerated, use:
+    //   `swift test --generate-linuxmain`
+    // to regenerate.
+    static let __allTests__TypeForwardingTests = [
+        ("testThatItCallsResolvedDependenciesBlockProvidedAfterRegistrationWhenResolvingByTypeForwarding", testThatItCallsResolvedDependenciesBlockProvidedAfterRegistrationWhenResolvingByTypeForwarding),
+        ("testThatItCallsResolvedDependenciesBlockWhenResolvingByTypeForwarding", testThatItCallsResolvedDependenciesBlockWhenResolvingByTypeForwarding),
+        ("testThatItCanResolveOptional", testThatItCanResolveOptional),
+        ("testThatItDoesNotOverrideIfDefinitionForwardsTheSameTypeWithDifferentTag", testThatItDoesNotOverrideIfDefinitionForwardsTheSameTypeWithDifferentTag),
+        ("testThatItDoesNotResolveByTypeForwardingIfRegisteredForAnotherTag", testThatItDoesNotResolveByTypeForwardingIfRegisteredForAnotherTag),
+        ("testThatItDoesNotReuseInstanceResolvedByTypeForwardingRegisteredForAnotherTag", testThatItDoesNotReuseInstanceResolvedByTypeForwardingRegisteredForAnotherTag),
+        ("testThatItFallbackToDefinitionWithNoTagWhenResolvingInstanceByTypeForwarding", testThatItFallbackToDefinitionWithNoTagWhenResolvingInstanceByTypeForwarding),
+        ("testThatItFirstUsesTaggedDefinitionWhenResolvingOptional", testThatItFirstUsesTaggedDefinitionWhenResolvingOptional),
+        ("testThatItOverridesIfSeveralDefinitionsWithTheSameTagForwardTheSameType", testThatItOverridesIfSeveralDefinitionsWithTheSameTagForwardTheSameType),
+        ("testThatItResolvesInstanceByTypeForwarding", testThatItResolvesInstanceByTypeForwarding),
+        ("testThatItReusesInstanceResolvedByTypeForwarding", testThatItReusesInstanceResolvedByTypeForwarding),
+        ("testThatItReusesInstancesResolvedForOptionalType", testThatItReusesInstancesResolvedForOptionalType),
+        ("testThatItThrowsErrorWhenResolvingNotImplementedTypeWithTypeForwarding", testThatItThrowsErrorWhenResolvingNotImplementedTypeWithTypeForwarding),
+    ]
+}
+
+public func __allTests() -> [XCTestCaseEntry] {
+    return [
+        testCase(AutoInjectionTests.__allTests__AutoInjectionTests),
+        testCase(AutoWiringTests.__allTests__AutoWiringTests),
+        testCase(ComponentScopeTests.__allTests__ComponentScopeTests),
+        testCase(ContextTests.__allTests__ContextTests),
+        testCase(DefinitionTests.__allTests__DefinitionTests),
+        testCase(DipTests.__allTests__DipTests),
+        testCase(RuntimeArgumentsTests.__allTests__RuntimeArgumentsTests),
+        testCase(TypeForwardingTests.__allTests__TypeForwardingTests),
+    ]
+}
+#endif
Author	SHA1	Message	Date
Ilya Puchka	c3b601df0f	Merge pull request #235 from AliSoftware/develop Release 7.1.1	2019-12-27 11:36:42 +00:00
Ilya Puchka	56b0768d60	bump version to 7.1.1	2019-12-27 11:14:55 +00:00
Ilya Puchka	8cf87efb95	Update podspec author	2019-12-27 11:07:21 +00:00
Ilya Puchka	3aa9b334f1	Merge pull request #233 from AliSoftware/spm-fix Enabled StoryboardInstantiatable for SPM builds	2019-11-15 11:53:25 +00:00
Ilya Puchka	b2a0cda242	Update StoryboardInstantiatable.swift	2019-11-13 13:16:52 +00:00
Ilya Puchka	07eb66e87d	Merge pull request #231 from AliSoftware/develop Release 7.1.0	2019-11-11 14:41:08 +00:00
Ilya Puchka	82e3d02497	Merge branch 'master' into develop	2019-11-11 14:22:24 +00:00
Ilya Puchka	3b2f5a272f	bumpe version to 7.1.0	2019-11-10 16:11:17 +00:00
Ilya Puchka	eab2d424e7	allow to disable thread safety on container level	2019-11-10 16:01:20 +00:00
Ilya Puchka	0f2cda0a52	update changelog	2019-11-10 15:53:45 +00:00
Ilya Puchka	05c02c9645	Merge pull request #225 from AliSoftware/property-delegates Property wrappers	2019-11-10 15:52:49 +00:00
Ilya Puchka	fa086dad8f	add xcode 11 and swift 5.1 to travis build	2019-11-10 15:35:53 +00:00
Ilya Puchka	cdc09f5a03	removed unneeded initial nil values	2019-11-10 15:22:38 +00:00
Ilya Puchka	b94ed3bea2	fix warning	2019-11-10 15:22:16 +00:00
Ilya Puchka	0fd70e65dd	Merge branch 'develop' into property-delegates	2019-11-10 15:13:55 +00:00
Ilya Puchka	97e7f4782f	Merge branch 'pr/221' into develop	2019-11-10 15:12:41 +00:00
Ilya Puchka	f1fdbbc988	code review	2019-11-10 15:02:03 +00:00
Ilya Puchka	e368bb3051	Merge branch 'develop' into nested_types	2019-11-10 14:50:07 +00:00
Ilya Puchka	4ce4832960	Merge pull request #229 from dchohfi/develop Bump watchos deployment target to 3.0	2019-10-28 08:46:22 +00:00
Diego Chohfi	d3bd0c27e3	Bump watchos deployment target to 3.0	2019-10-21 10:40:46 -07:00
Ilya Puchka	be0c39ab6b	update for beta 3	2019-07-07 23:54:58 +01:00
Ilya Puchka	0de45e7d53	fixed checking for new injected value	2019-07-07 23:53:45 +01:00
Ilya Puchka	3b421d0cff	refactor property wrappers to struct	2019-07-07 16:16:50 +01:00
Ilya Puchka	f1234bf2b9	introduce swift 5.1 property delegates	2019-06-30 19:12:42 +01:00
Ilya Puchka	b0d7153bfe	ignore swiftpm files	2019-06-30 18:27:59 +01:00
Ilya Puchka	0193aa6bf6	Merge pull request #224 from AliSoftware/swift5 Swift 5	2019-06-30 17:17:49 +01:00
Ilya Puchka	de7ad3ac48	removed linux thread safety tests, regenerate test manifest	2019-06-30 16:59:10 +01:00
Ilya Puchka	40ad490c48	removed unneeded code	2019-06-30 15:53:23 +01:00
Ilya Puchka	95cc5df26f	fixed Linux tests	2019-06-30 15:40:40 +01:00
Ilya Puchka	09a7115aff	fix tests	2019-06-30 14:29:22 +01:00
Ilya Puchka	15c0002ea3	remove compatibility file	2019-06-12 01:18:14 +01:00
Ilya Puchka	0644d85a9c	update swift version in all targets	2019-06-12 01:18:05 +01:00
Ilya Puchka	e1522a0bf3	Merge branch 'develop' into swift5	2019-06-12 01:15:06 +01:00
Ilya Puchka	a659415496	generate LinuxMain	2019-06-11 23:23:39 +01:00
Ilya Puchka	efe25d575b	update package description	2019-06-11 23:10:22 +01:00
Ilya Puchka	22c67fa30c	disable spec validation	2019-06-11 21:30:55 +01:00
Ilya Puchka	7a091da44d	migrate to swift 5	2019-06-11 21:16:03 +01:00
s	9580976dd8	Print nested types in errors, hash keys using full typenames	2019-04-01 17:13:06 +02:00
Ilya Puchka	a4f0256313	fixed typos	2018-12-20 01:32:21 +00:00
Ilya Puchka	815e9ccd66	shorthand method for resolving properties via keypaths	2018-12-20 01:30:35 +00:00
Ilya Puchka	b9bf9c4d75	Merge pull request #216 from AliSoftware/develop Release 7.0.1	2018-12-19 22:54:14 +00:00
Ilya Puchka	530a20999a	use Cocoapods 1.4.0 as latest versions fail validation	2018-12-19 15:56:32 +00:00
Ilya Puchka	4f3bc1e498	Merge branch 'master' into release/7.0.1	2018-11-19 20:35:40 +00:00
Ilya Puchka	8dcb136ff0	fixed typos	2018-11-19 20:34:56 +00:00
Ilya Puchka	88d02af706	bump version to 7.0.1	2018-11-19 20:32:40 +00:00
Ilya Puchka	a8777c067e	Allow to disabled/enable auto injection for container or single definition. fixes #214 , resolves #212	2018-11-19 00:03:15 +00:00
Ilya Puchka	db40e8580c	Added test for regression SR-8878	2018-11-19 00:03:15 +00:00
Ilya Puchka	334fb384a5	Update README.md	2018-11-18 23:54:49 +00:00
Ilya Puchka	54e1db2232	Merge pull request #207 from AliSoftware/develop Release 7.0.0	2018-09-22 23:31:41 +03:00
Ilya Puchka	c5c6bd2821	Merge branch 'master' into develop	2018-09-22 23:20:46 +03:00
Ilya Puchka	593129c63e	update cocoapods on travis	2018-09-22 20:47:45 +01:00
Ilya Puchka	9a8d919a13	bump xcode and swift version on travis	2018-09-22 20:16:49 +01:00
Ilya Puchka	17a2d64361	bumped version to 7.0.0	2018-09-22 20:16:49 +01:00
Ilya Puchka	27037c2dd7	fix indentation in some docs	2018-09-22 20:01:16 +01:00
Ilya Puchka	bd253f4b0a	bump xcode and swift version on travis	2018-09-22 19:48:10 +01:00
Ilya Puchka	882b2a2031	bumped version to 7.0	2018-09-22 19:25:18 +01:00
Ilya Puchka	6a14c1f96d	updated CHANGELOG	2018-09-22 19:24:00 +01:00
Ilya Puchka	f60e322445	bumped swift version, removed unneded IUO tests	2018-09-22 19:19:45 +01:00
Ilya Puchka	77f6fde2fa	Merge branch 'swift42' into develop	2018-09-22 19:16:27 +01:00
Ilya Puchka	a8f7a2972a	silence warning	2018-09-22 19:15:43 +01:00
Ilya Puchka	ce9088afc7	fix reusing optionals	2018-09-22 18:47:34 +01:00
Ilya Puchka	ef563c65ba	fix build error on mac with SPM	2018-09-19 16:46:31 +03:00
Ilya Puchka	90ff39c720	fix build error on mac with SPM	2018-09-19 15:13:22 +03:00
Ilya Puchka	e45dbd634f	Merge with DipUI (#206 ) * merge with DipUI	2018-09-19 15:02:26 +03:00
Bruno Virlet	f81c267c61	Disable gathering code coverage (#198 ) This causes issues whenn linking as a static library using Carthage	2018-07-25 18:10:51 +01:00
Michele Gruppioni	d5b07b1916	Removed extension of ImplicitlyUnwrappedOptional (#191 ) * Removed extension of ImplicitlyUnwrappedOptional It was deprecated and has been removed in swift 4.2 * Added Swift Version Check	2018-07-13 11:43:40 +01:00
Ilya Puchka	33993df68a	disable test coverage	2018-06-06 21:08:44 +01:00
Ilya Puchka	dadb68862a	fixed getting resolved instances	2018-06-06 01:15:08 +01:00
Ilya Puchka	2e53aa8ae2	Merge pull request #190 from AliSoftware/develop Release 6.1	2018-04-28 20:24:35 +01:00
Ilya Puchka	142a348b20	removed unneded builds from travis	2018-04-28 20:05:53 +01:00
Ilya Puchka	88f101639d	updated travis config	2018-04-28 19:48:03 +01:00
Ilya Puchka	5e70633ece	bumped swift version to 4.1	2018-04-28 19:43:49 +01:00
Ilya Puchka	af57aa26ed	bumped version to 6.1	2018-04-28 19:41:45 +01:00
Ilya Puchka	6d6d77d603	fixed swift 4.1 warnings	2018-04-28 19:39:46 +01:00
Ilya Puchka	8d2f6ab8fb	Revert #171 (#189 ) * Revert "fix merge conflict" This reverts commit `aff01c541b`. * Revert "Merge branch 'develop' into develop" This reverts commit `a8dd47cee5`, reversing changes made to `9e7bd51bcd`.	2018-04-28 19:21:05 +01:00
Ilya Puchka	2cc5310d4b	Merge pull request #182 from tapsandswipes/develop Fix crash with colaborator containers and weak singletons	2018-02-26 13:25:17 +00:00
Antonio Cabezuelo Vivo	5cb03a11bb	Fix crash with colaborator containers and weak singletons Signed-off-by: Antonio Cabezuelo Vivo <antonio@tapsandswipes.com>	2018-02-12 14:17:31 +01:00
Ilya Puchka	aff01c541b	fix merge conflict	2017-12-12 16:56:23 +01:00
Ilya Puchka	a8dd47cee5	Merge branch 'develop' into develop	2017-12-12 16:51:32 +01:00
Ilya Puchka	12738a665f	Merge pull request #171 from creditkarma/parent_child_containers Parent child container support for Dip	2017-12-12 16:33:32 +01:00
Oleksa 'trimm' Korin	9e7bd51bcd	Restructured tests, fixed crash	2017-10-30 23:49:44 +02:00
Oleksa 'trimm' Korin	ce394e7d2b	Added reproduction test	2017-10-30 23:26:36 +02:00
Oleksa 'trimm' Korin	cd2c66f4a8	Initial try for collaboration reproduction crash	2017-10-30 20:45:51 +02:00
Ilya Puchka	5464f00bad	Merge pull request #177 from AliSoftware/release/6.0 Release 6.0	2017-10-09 18:12:39 +02:00
Ilya Puchka	5b9cc50190	Merge branch 'master' into release/6.0	2017-09-27 00:35:49 +02:00
Ilya Puchka	a7c8616300	updated changelog	2017-09-27 00:34:57 +02:00
Ilya Puchka	8349fbd8d8	bump version to 6.0	2017-09-26 23:51:08 +02:00
Ilya Puchka	4b1ecbcb8e	removed previously deprecated method	2017-09-26 23:50:56 +02:00
Ilya Puchka	2f0e1fdb10	Merge pull request #176 from AliSoftware/swift4 Swift 4 migration	2017-09-26 23:45:25 +02:00
Ilya Puchka	4a8a1daeca	swift version settings update	2017-09-21 22:26:19 +02:00
Ilya Puchka	56554147cb	travis update	2017-09-16 19:36:07 +02:00
Ilya Puchka	a554454afe	fixed failing tests	2017-09-16 19:24:15 +02:00
Ilya Puchka	dde2e98953	project settings updated and warnings fixed	2017-09-16 18:52:58 +02:00
Ilya Puchka	a2c04ed61e	migrate tests	2017-09-16 18:39:12 +02:00
Ilya Puchka	c64cf720b8	swift 4 migration	2017-09-16 18:04:36 +02:00
John Twigg	3429c6ae0b	Parent child container support for Dip	2017-08-02 10:41:03 -07:00
Ilya Puchka	451fb03bc8	updated changelog	2017-07-30 12:31:06 +02:00
Ilya Puchka	b1ad2a65b2	Merge pull request #169 from AliSoftware/fix-collaboration-sharing-singletons Fix: containers with common collaborator share resolved instances for their own definitions	2017-07-30 12:19:34 +02:00
Ilya Puchka	3f8b83b87c	addet test for peforming autowiring before collaboration	2017-07-29 18:16:54 +02:00
Ilya Puchka	b7bf4904e9	fixed sharing singletons during collaboration	2017-07-29 18:04:28 +02:00
Ilya Puchka	199b1aec8f	Merge pull request #156 from kandelvijaya/improvement/equatableIntoItsExtension Added Equatable conformance on the site of declaration	2017-04-14 23:06:30 +02:00
Ilya Puchka	22d19697f1	Merge pull request #155 from kandelvijaya/patch-1 Playgrounds typo fixes	2017-04-14 23:05:22 +02:00
vkandel	d809177273	moved equatable conformance into Hashable declaration site for DefinationKey	2017-04-09 21:41:10 +02:00
vkandel	420c866726	Added Equatable conformance on the site of declaration	2017-04-09 21:32:31 +02:00
Vijaya Prakash Kandel	6e6cc0b1df	Merge pull request #1 from kandelvijaya/patch-2 Update Contents.swift	2017-04-09 21:04:19 +02:00
Vijaya Prakash Kandel	b71f50cef5	Update Contents.swift	2017-04-09 21:03:56 +02:00
Vijaya Prakash Kandel	462d528474	Update Contents.swift	2017-04-09 21:02:00 +02:00
Ilya Puchka	01c318bd5c	Merge branch 'release/5.1' into develop	2017-04-09 13:20:40 +02:00
Ilya Puchka	a0c890c931	Merge pull request #152 from AliSoftware/release/5.1 Release 5.1	2017-04-09 13:18:56 +02:00
Ilya Puchka	9b2a7918d8	Merge pull request #154 from AliSoftware/auto-wiring-tag-fix Fixed auto-wiring with tagged definitions	2017-04-09 13:08:04 +02:00
Ilya Puchka	218b5a4e9a	disable running tests on watchos on Travis https://github.com/travis-ci/travis-ci/issues/7580	2017-04-09 12:56:22 +02:00
Ilya Puchka	0b221f3368	fixed auto-wiring with tagged definitions	2017-04-09 12:08:48 +02:00
Ilya Puchka	3b943c10ef	Merge branch 'master' into release/5.1	2017-04-06 22:51:21 +02:00
Ilya Puchka	a1da60bd14	updated CHANGELOG, bumped version to 5.1	2017-04-06 22:49:05 +02:00
Ilya Puchka	1825cd7d4c	Merge pull request #151 from AliSoftware/recursive-collaboration Fixed collaboration shared references	2017-04-06 22:40:08 +02:00
Ilya Puchka	e7d8fb41e1	fixed collaboration references, now collaboration is bidirectional	2017-04-06 21:46:08 +02:00
Ilya Puchka	1c398defeb	Merge pull request #150 from AliSoftware/drop-swift2.3 Drop Swift 2.3	2017-04-06 10:49:51 +02:00
Ilya Puchka	ab561546f0	allow spec warnings	2017-04-06 00:43:48 +02:00
Ilya Puchka	c0fb925ab8	updated travis config to build for 3.0 and 3.1 on Linux	2017-04-06 00:00:22 +02:00
Ilya Puchka	80ee4865ce	drop swift 2.3 support	2017-04-01 00:44:10 +02:00
Ilya Puchka	d95df1343e	minor changes for loging function	2017-03-30 19:43:11 +02:00
Ilya Puchka	a83d866cbd	Merge pull request #146 from Pr0Ger/develop Enable use of custom or no logging function	2017-03-30 19:42:25 +02:00
Ilya Puchka	cc1dcba4b9	Merge pull request #145 from DenHeadless/patch-1 Fix swift 3.1 warning	2017-03-30 19:15:19 +02:00
Sergey Petrov	0ceb6a3503	Enable use of custom or no logging function	2017-03-30 17:02:11 +03:00
Denys Telezhkin	4e641a6465	fix swift 3.1 warning	2017-03-30 15:14:27 +03:00
Ilya Puchka	35b6da8556	fixed method name inconsistency	2017-03-10 00:01:37 +01:00
Ilya Puchka	47bc1913e3	Merge pull request #141 from AliSoftware/swift-3.0.2 Swift 3.0.2	2017-01-23 23:24:02 +01:00
Ilya Puchka	24d341503e	swift 3.0.2	2017-01-21 23:04:50 +01:00
Ilya Puchka	3c1331089b	Merge branch 'hotfix/swift2.3-api-diff' into develop	2016-11-01 17:24:21 +03:00
Ilya Puchka	7af8957a01	Merge pull request #135 from AliSoftware/hotfix/swift2.3-api-diff Hotfix - swift2.3 api diff	2016-11-01 18:23:04 +04:00
Ilya Puchka	6b68bea55d	bumped version to 5.0.4	2016-11-01 14:52:37 +03:00
Ilya Puchka	5b2168ecef	fixed broken swift 2.3 api	2016-11-01 14:47:33 +03:00
Ilya Puchka	5eb0eece56	Merge branch 'release/5.0.3' into develop	2016-10-23 23:54:58 +03:00
Ilya Puchka	bdf4477774	Merge pull request #131 from AliSoftware/release/5.0.3 Release 5.0.3	2016-10-24 00:53:32 +04:00
Ilya Puchka	84573d967b	fixed typo	2016-10-23 22:19:19 +03:00
Ilya Puchka	83511d601b	Merge branch 'master' into release/5.0.3	2016-10-21 22:01:23 +04:00
Ilya Puchka	b24734e1c9	fixed access levels	2016-10-13 00:04:31 +02:00
Ilya Puchka	ab9abbe7ab	bumped version to 5.0.3	2016-10-12 23:54:30 +02:00
Ilya Puchka	298cf83be3	updated README and CHANGELOG	2016-10-12 23:54:30 +02:00
Ilya Puchka	455456e817	Merge pull request #127 from AliSoftware/feature/swift-compatibility Swift 2.3 compatibility	2016-10-12 22:59:02 +02:00
Ilya Puchka	905cbdadb0	swift 2.3 compatibility	2016-10-12 20:47:33 +02:00
Ilya Puchka	945caa451a	sligtly improved logging	2016-10-11 13:40:10 +02:00
Ilya Puchka	bfacca6fd0	Merge pull request #129 from AliSoftware/features/fixed-reusing-released-weak-singletons Fixed reusing instances for weak singletons	2016-10-10 15:08:03 +02:00
Ilya Puchka	21673d1f4d	added some tests	2016-10-10 15:07:22 +02:00
Ilya Puchka	65175fa372	fixed reusing instances for weak singletons when underlying instance was already released	2016-10-10 14:02:11 +02:00
Ilya Puchka	99fb4ea081	Merge branch 'release/5.0.2' into develop	2016-10-09 11:34:29 +02:00
Ilya Puchka	a1ece4b0ab	Merge pull request #126 from AliSoftware/release/5.0.2 Release 5.0.2	2016-10-09 11:33:26 +02:00
Ilya Puchka	0b00e13e00	added hasPrefix method for Linux	2016-10-09 00:34:11 +02:00
Ilya Puchka	4aec626a1f	bumped version to 5.0.2	2016-10-08 00:28:05 +02:00
Ilya Puchka	d477392deb	building against 3.0-RELEASE on Travis on Linux	2016-10-08 00:27:51 +02:00
Ilya Puchka	3b23dc1a6f	updated README and CHANGELOG	2016-10-08 00:27:08 +02:00
Ilya Puchka	1d7d0052bf	fixed logging	2016-10-07 22:47:07 +02:00
Ilya Puchka	b1fee5c1db	Merge pull request #125 from AliSoftware/features/swift-3-fixes Fixed Swift 3 issues	2016-10-07 22:13:41 +02:00
Ilya Puchka	e19b65d9c2	fixed issues with reflection of objectes with IUO properties	2016-10-07 19:19:05 +02:00
Ilya Puchka	86bb28da14	Merge branch 'hotfix/pod-fix' into develop	2016-09-16 12:13:30 +02:00
Ilya Puchka	e4545e3ed3	Merge pull request #124 from AliSoftware/hotfix/pod-fix Pod hotfix	2016-09-16 12:13:03 +02:00
Ilya Puchka	52455e663c	bumped version to 5.0.1	2016-09-15 01:37:25 +02:00
Ilya Puchka	7a10d1e46e	fixed linting podspec	2016-09-15 01:00:34 +02:00
Ilya Puchka	e95df85503	Update README.md	2016-09-11 21:18:03 +02:00
Ilya Puchka	a028c05271	Merge branch 'release/5.0.0' into develop	2016-09-11 20:48:56 +02:00