diff --git a/SwiftShell/Command.swift b/SwiftShell/Command.swift
index 844c373..ca3a0a5 100644
--- a/SwiftShell/Command.swift
+++ b/SwiftShell/Command.swift
@@ -29,7 +29,7 @@ left side as standard input.
 Warning: is only meant to be used with the "run" command, but could also unintentionally catch other uses of
 "ReadableStreamType |> ReadableStreamType", though that statement doesn't make any sense.
 */
-public func |> (lhs: ReadableStreamType, rhs: @autoclosure () -> ReadableStreamType) -> ReadableStreamType {
+public func |> (lhs: ReadableStreamType, @autoclosure rhs:  () -> ReadableStreamType) -> ReadableStreamType {
 	assert(_nextinput_ == nil)
 	_nextinput_ = lhs
 	let result = rhs()
@@ -49,7 +49,7 @@ public func run (shellcommand: String) -> ReadableStreamType {
 	let task = newtask(shellcommand)
 	
 	if let input = _nextinput_ {
-		task.standardInput = input as FileHandle
+		task.standardInput = input as! FileHandle
 		_nextinput_ = nil
 	} else {
 		// avoids implicit reading of the main script's standardInput
diff --git a/SwiftShell/FileHandle.swift b/SwiftShell/FileHandle.swift
index fdf372c..3b19475 100644
--- a/SwiftShell/FileHandle.swift
+++ b/SwiftShell/FileHandle.swift
@@ -19,7 +19,7 @@ extension FileHandle: ReadableStreamType {
 			return nil
 		} else {
 			if let result = NSString(data: data, encoding: streamencoding) {
-				return result
+				return result as String
 			} else {
 				printErrorAndExit("Fatal error - could not read stream.")
 			}
@@ -29,7 +29,7 @@ extension FileHandle: ReadableStreamType {
 	public func read () -> String {
 		let data: NSData = self.readDataToEndOfFile()
 		if let result = NSString(data: data, encoding: streamencoding) {
-			return result
+			return result as String
 		} else {
 			printErrorAndExit("Fatal error - could not read stream.")
 		}
@@ -114,7 +114,7 @@ public func open (forWriting path: String, overwrite: Bool = false) -> Writeable
 }
 
 
-public let environment		= NSProcessInfo.processInfo().environment as [String: String]
+public let environment		= NSProcessInfo.processInfo().environment as! [String: String]
 public let standardinput	= FileHandle.fileHandleWithStandardInput() as ReadableStreamType
 public let standardoutput	= FileHandle.fileHandleWithStandardOutput() as WriteableStreamType
 public let standarderror	= FileHandle.fileHandleWithStandardError() as WriteableStreamType
diff --git a/SwiftShell/String.swift b/SwiftShell/String.swift
index 1d0a184..1c47f5b 100644
--- a/SwiftShell/String.swift
+++ b/SwiftShell/String.swift
@@ -33,7 +33,7 @@ extension String {
 	}
 
 	public func countOccurrencesOf (substring: String) -> Int {
-		return self.findAll(substring) |> toArray |> countElements
+		return self.findAll(substring) |> toArray |> count
 	}
 
 	/** A lazy sequence of the ranges of `findstring` in this string. */