diff --git a/AsyncDisplayKit/ASButtonNode.mm b/AsyncDisplayKit/ASButtonNode.mm
index 0bcad75c..fda284ad 100644
--- a/AsyncDisplayKit/ASButtonNode.mm
+++ b/AsyncDisplayKit/ASButtonNode.mm
@@ -78,7 +78,7 @@
       // of the button node to add a touch handler.
     [_titleNode setLayerBacked:YES];
 #endif
-    _titleNode.style.flexShrink = 1;
+    _titleNode.style.flexShrink = 1.0;
   }
   return _titleNode;
 }
diff --git a/AsyncDisplayKit/ASVideoPlayerNode.mm b/AsyncDisplayKit/ASVideoPlayerNode.mm
index 573d38dd..00be9a81 100644
--- a/AsyncDisplayKit/ASVideoPlayerNode.mm
+++ b/AsyncDisplayKit/ASVideoPlayerNode.mm
@@ -417,7 +417,7 @@ static void *ASVideoPlayerNodeContext = &ASVideoPlayerNodeContext;
 {
   if (_controlFlexGrowSpacerSpec == nil) {
     _controlFlexGrowSpacerSpec = [[ASStackLayoutSpec alloc] init];
-    _controlFlexGrowSpacerSpec.style.flexGrow = 1;
+    _controlFlexGrowSpacerSpec.style.flexGrow = 1.0;
   }
 
   [_cachedControls setObject:_controlFlexGrowSpacerSpec forKey:@(ASVideoPlayerNodeControlTypeFlexGrowSpacer)];
@@ -733,7 +733,7 @@ static void *ASVideoPlayerNodeContext = &ASVideoPlayerNodeContext;
   _scrubberNode.style.preferredSize = CGSizeMake(maxSize.width, 44.0);
 
   ASLayoutSpec *spacer = [[ASLayoutSpec alloc] init];
-  spacer.style.flexGrow = 1;
+  spacer.style.flexGrow = 1.0;
 
   ASStackLayoutSpec *controlbarSpec = [ASStackLayoutSpec stackLayoutSpecWithDirection:ASStackLayoutDirectionHorizontal
                                                                             spacing:10.0
diff --git a/examples/ASDKLayoutTransition/Sample/ViewController.m b/examples/ASDKLayoutTransition/Sample/ViewController.m
index e3addd46..28f08b25 100644
--- a/examples/ASDKLayoutTransition/Sample/ViewController.m
+++ b/examples/ASDKLayoutTransition/Sample/ViewController.m
@@ -98,8 +98,8 @@
 - (ASLayoutSpec *)layoutSpecThatFits:(ASSizeRange)constrainedSize
 {
   ASTextNode *nextTextNode = self.enabled ? self.textNodeTwo : self.textNodeOne;
-  nextTextNode.style.flexGrow = YES;
-  nextTextNode.style.flexShrink = YES;
+  nextTextNode.style.flexGrow = 1.0;
+  nextTextNode.style.flexShrink = 1.0;
   
   ASStackLayoutSpec *horizontalStackLayout = [ASStackLayoutSpec horizontalStackLayoutSpec];
   horizontalStackLayout.children = @[nextTextNode];
diff --git a/examples/ASDKTube/Sample/Nodes/VideoContentCell.m b/examples/ASDKTube/Sample/Nodes/VideoContentCell.m
index 3459c9a3..ca214c7a 100644
--- a/examples/ASDKTube/Sample/Nodes/VideoContentCell.m
+++ b/examples/ASDKTube/Sample/Nodes/VideoContentCell.m
@@ -47,7 +47,7 @@
 
     _titleNode = [[ASTextNode alloc] init];
     _titleNode.attributedText = [[NSAttributedString alloc] initWithString:_videoModel.title attributes:[self titleNodeStringOptions]];
-    _titleNode.style.flexGrow = YES;
+    _titleNode.style.flexGrow = 1.0;
     [self addSubnode:_titleNode];
 
     _avatarNode = [[ASNetworkImageNode alloc] init];
@@ -184,7 +184,7 @@
 - (ASLayoutSpec*)videoPlayerNodeLayoutSpec:(ASVideoPlayerNode *)videoPlayer forControls:(NSDictionary *)controls forMaximumSize:(CGSize)maxSize
 {
   ASLayoutSpec *spacer = [[ASLayoutSpec alloc] init];
-  spacer.style.flexGrow = YES;
+  spacer.style.flexGrow = 1.0;
 
   UIEdgeInsets insets = UIEdgeInsetsMake(10.0, 10.0, 10.0, 10.0);
 
@@ -193,7 +193,7 @@
     scrubber.style.height = ASDimensionMakeWithPoints(44.0);
     scrubber.style.minWidth = ASDimensionMakeWithPoints(0.0);
     scrubber.style.maxWidth = ASDimensionMakeWithPoints(maxSize.width);
-    scrubber.style.flexGrow = YES;
+    scrubber.style.flexGrow = 1.0;
   }
 
   NSArray *controlBarControls = [self controlsForControlBar:controls];
diff --git a/examples/ASDKTube/Sample/ViewController.m b/examples/ASDKTube/Sample/ViewController.m
index 19a9213b..537d4421 100644
--- a/examples/ASDKTube/Sample/ViewController.m
+++ b/examples/ASDKTube/Sample/ViewController.m
@@ -176,7 +176,7 @@
   }
 
   ASLayoutSpec *spacer = [[ASLayoutSpec alloc] init];
-  spacer.flexGrow = YES;
+  spacer.flexGrow = 1.0;
 
   ASStackLayoutSpec *topBarSpec = [ASStackLayoutSpec stackLayoutSpecWithDirection:ASStackLayoutDirectionHorizontal
                                                                               spacing:10.0
diff --git a/examples/ASDKgram/Sample/PhotoCellNode.m b/examples/ASDKgram/Sample/PhotoCellNode.m
index 4b22f0be..db5f8b55 100644
--- a/examples/ASDKgram/Sample/PhotoCellNode.m
+++ b/examples/ASDKgram/Sample/PhotoCellNode.m
@@ -113,11 +113,11 @@
 - (ASLayoutSpec *)layoutSpecThatFits:(ASSizeRange)constrainedSize
 {
   // username / photo location header vertical stack
-  _photoLocationLabel.style.flexShrink    = YES;
-  _userNameLabel.style.flexShrink         = YES;
+  _photoLocationLabel.style.flexShrink    = 1.0;
+  _userNameLabel.style.flexShrink         = 1.0;
   
   ASStackLayoutSpec *headerSubStack = [ASStackLayoutSpec verticalStackLayoutSpec];
-  headerSubStack.style.flexShrink         = YES;
+  headerSubStack.style.flexShrink         = 1.0;
   if (_photoLocationLabel.attributedText) {
     [headerSubStack setChildren:@[_userNameLabel, _photoLocationLabel]];
   } else {
@@ -131,7 +131,7 @@
   _photoTimeIntervalSincePostLabel.style.spacingBefore = HORIZONTAL_BUFFER;                                    // to remove double spaces around spacer
   
   ASLayoutSpec *spacer           = [[ASLayoutSpec alloc] init];    // FIXME: long locations overflow post time - set max size?
-  spacer.style.flexGrow          = YES;
+  spacer.style.flexGrow          = 1.0;
   
   UIEdgeInsets avatarInsets      = UIEdgeInsetsMake(HORIZONTAL_BUFFER, 0, HORIZONTAL_BUFFER, HORIZONTAL_BUFFER);
   ASInsetLayoutSpec *avatarInset = [ASInsetLayoutSpec insetLayoutSpecWithInsets:avatarInsets child:_userAvatarImageView];
diff --git a/examples/AsyncDisplayKitOverview/Sample/Node Containers/OverviewASCollectionNode.m b/examples/AsyncDisplayKitOverview/Sample/Node Containers/OverviewASCollectionNode.m
index ce09ceeb..d58b6862 100644
--- a/examples/AsyncDisplayKitOverview/Sample/Node Containers/OverviewASCollectionNode.m	
+++ b/examples/AsyncDisplayKitOverview/Sample/Node Containers/OverviewASCollectionNode.m	
@@ -70,7 +70,7 @@
 
 - (ASSizeRange)collectionView:(ASCollectionView *)collectionView constrainedSizeForNodeAtIndexPath:(NSIndexPath *)indexPath
 {
-    return ASSizeRangeMakeExactSize(CGSizeMake(100, 100));
+    return ASSizeRangeMake(CGSizeMake(100, 100));
 }
 
 @end
diff --git a/examples/AsyncDisplayKitOverview/Sample/OverviewComponentsViewController.m b/examples/AsyncDisplayKitOverview/Sample/OverviewComponentsViewController.m
index 7dbe996d..585c4c35 100644
--- a/examples/AsyncDisplayKitOverview/Sample/OverviewComponentsViewController.m
+++ b/examples/AsyncDisplayKitOverview/Sample/OverviewComponentsViewController.m
@@ -387,8 +387,8 @@ typedef ASLayoutSpec *(^OverviewDisplayNodeSizeThatFitsBlock)(ASSizeRange constr
     // If we just would add the childrent to the stack layout the layout would be to tall and run out of the edge of
     // the node as 50+50+50 = 150 but the parent node is only 100 height. To prevent that we set flexShrink on 2 of the
     // children to let the stack layout know it should shrink these children in case the layout will run over the edge
-    childNode2.style.flexShrink = YES;
-    childNode3.style.flexShrink = YES;
+    childNode2.style.flexShrink = 1.0;
+    childNode3.style.flexShrink = 1.0;
     
     parentNode = [self parentNodeWithChild:childNode];
     parentNode.entryTitle = @"Vertical ASStackLayoutSpec";
@@ -407,7 +407,7 @@ typedef ASLayoutSpec *(^OverviewDisplayNodeSizeThatFitsBlock)(ASSizeRange constr
 #pragma mark Horizontal ASStackLayoutSpec
     childNode1 = [ASDisplayNode new];
     childNode1.style.preferredSize = CGSizeMake(10.0, 20.0);
-    childNode1.style.flexGrow = YES;
+    childNode1.style.flexGrow = 1.0;
     childNode1.backgroundColor = [UIColor greenColor];
     
     childNode2 = [ASDisplayNode new];
diff --git a/examples/CatDealsCollectionView/Sample/ItemNode.m b/examples/CatDealsCollectionView/Sample/ItemNode.m
index 3fb7a393..4ee00143 100644
--- a/examples/CatDealsCollectionView/Sample/ItemNode.m
+++ b/examples/CatDealsCollectionView/Sample/ItemNode.m
@@ -76,7 +76,7 @@ const CGFloat kSoldOutGBHeight = 50.0;
   self.titleLabel = [[ASTextNode alloc] init];
   self.titleLabel.maximumNumberOfLines = 2;
   self.titleLabel.style.alignSelf = ASStackLayoutAlignSelfStart;
-  self.titleLabel.style.flexGrow = YES;
+  self.titleLabel.style.flexGrow = 1.0;
   self.titleLabel.layerBacked = YES;
   
   self.firstInfoLabel = [[ASTextNode alloc] init];
@@ -110,11 +110,11 @@ const CGFloat kSoldOutGBHeight = 50.0;
   self.soldOutLabelBackground.style.width = ASDimensionMakeWithFraction(1.0);
   self.soldOutLabelBackground.style.height = ASDimensionMakeWithPoints(kSoldOutGBHeight);
   self.soldOutLabelBackground.backgroundColor = [[UIColor whiteColor] colorWithAlphaComponent:0.9];
-  self.soldOutLabelBackground.style.flexGrow = YES;
+  self.soldOutLabelBackground.style.flexGrow = 1.0;
   self.soldOutLabelBackground.layerBacked = YES;
   
   self.soldOutOverlay = [[ASDisplayNode alloc] init];
-  self.soldOutOverlay.style.flexGrow = YES;
+  self.soldOutOverlay.style.flexGrow = 1.0;
   self.soldOutOverlay.backgroundColor = [[UIColor whiteColor] colorWithAlphaComponent:0.5];
   self.soldOutOverlay.layerBacked = YES;
   
@@ -257,13 +257,13 @@ const CGFloat kSoldOutGBHeight = 50.0;
   UIEdgeInsets textInsets = UIEdgeInsetsMake(kInsetTop, kInsetHorizontal, kInsetBottom, kInsetHorizontal);
   
   ASLayoutSpec *verticalSpacer = [[ASLayoutSpec alloc] init];
-  verticalSpacer.style.flexGrow = YES;
+  verticalSpacer.style.flexGrow = 1.0;
   
   ASLayoutSpec *horizontalSpacer1 = [[ASLayoutSpec alloc] init];
-  horizontalSpacer1.style.flexGrow = YES;
+  horizontalSpacer1.style.flexGrow = 1.0;
   
   ASLayoutSpec *horizontalSpacer2 = [[ASLayoutSpec alloc] init];
-  horizontalSpacer2.style.flexGrow = YES;
+  horizontalSpacer2.style.flexGrow = 1.0;
   
   NSArray *info1Children = @[self.firstInfoLabel, self.distanceLabel, horizontalSpacer1, self.originalPriceLabel];
   NSArray *info2Children = @[self.secondInfoLabel, horizontalSpacer2, self.finalPriceLabel];
@@ -279,7 +279,7 @@ const CGFloat kSoldOutGBHeight = 50.0;
   ASStackLayoutSpec *textStack = [ASStackLayoutSpec stackLayoutSpecWithDirection:ASStackLayoutDirectionVertical spacing:0.0 justifyContent:ASStackLayoutJustifyContentEnd alignItems:ASStackLayoutAlignItemsStretch children:@[self.titleLabel, verticalSpacer, info1Stack, info2Stack]];
   
   ASInsetLayoutSpec *textWrapper = [ASInsetLayoutSpec insetLayoutSpecWithInsets:textInsets child:textStack];
-  textWrapper.style.flexGrow = YES;
+  textWrapper.style.flexGrow = 1.0;
   
   return textWrapper;
 }
@@ -294,7 +294,7 @@ const CGFloat kSoldOutGBHeight = 50.0;
   ASAbsoluteLayoutSpec *badgePosition = [ASAbsoluteLayoutSpec absoluteLayoutSpecWithChildren:@[self.badge]];
   
   ASOverlayLayoutSpec *badgeOverImage = [ASOverlayLayoutSpec overlayLayoutSpecWithChild:imagePlace overlay:badgePosition];
-  badgeOverImage.style.flexGrow = YES;
+  badgeOverImage.style.flexGrow = 1.0;
   
   return badgeOverImage;
 }
diff --git a/examples/Kittens/Sample/KittenNode.mm b/examples/Kittens/Sample/KittenNode.mm
index 2313338e..67e586b4 100644
--- a/examples/Kittens/Sample/KittenNode.mm
+++ b/examples/Kittens/Sample/KittenNode.mm
@@ -148,7 +148,7 @@ static const CGFloat kInnerPadding = 10.0f;
   _imageNode.style.preferredSize = imageSize;
   
   // Shrink the text node in case the image + text gonna be too wide
-  _textNode.style.flexShrink = YES;
+  _textNode.style.flexShrink = 1.0;
 
   // Configure stack
   ASStackLayoutSpec *stackLayoutSpec =
diff --git a/examples/SocialAppLayout/Sample/PostNode.m b/examples/SocialAppLayout/Sample/PostNode.m
index 945635c7..3206b00d 100644
--- a/examples/SocialAppLayout/Sample/PostNode.m
+++ b/examples/SocialAppLayout/Sample/PostNode.m
@@ -59,7 +59,7 @@
         // Username node
         _usernameNode = [[ASTextNode alloc] init];
         _usernameNode.attributedText = [[NSAttributedString alloc] initWithString:_post.username attributes:[TextStyles usernameStyle]];
-        _usernameNode.style.flexShrink = YES; //if name and username don't fit to cell width, allow username shrink
+        _usernameNode.style.flexShrink = 1.0; //if name and username don't fit to cell width, allow username shrink
         _usernameNode.truncationMode = NSLineBreakByTruncatingTail;
         _usernameNode.maximumNumberOfLines = 1;
         [self addSubnode:_usernameNode];
@@ -210,11 +210,11 @@
 {
     // Flexible spacer between username and time
     ASLayoutSpec *spacer = [[ASLayoutSpec alloc] init];
-    spacer.style.flexGrow = YES;
+    spacer.style.flexGrow = 1.0;
   
     // NOTE: This inset is not actually required by the layout, but is an example of the upward propogation of layoutable
     // properties.  Specifically, .flexGrow from the child is transferred to the inset spec so they can expand together.
-    // Without this capability, it would be required to set insetSpacer.flexGrow = YES;
+    // Without this capability, it would be required to set insetSpacer.flexGrow = 1.0;
     ASInsetLayoutSpec *insetSpacer =
     [ASInsetLayoutSpec
      insetLayoutSpecWithInsets:UIEdgeInsetsMake(0, 0, 0, 0)
@@ -279,7 +279,7 @@
      justifyContent:ASStackLayoutJustifyContentStart
      alignItems:ASStackLayoutAlignItemsStretch
      children:mainStackContent];
-    contentSpec.style.flexShrink = YES;
+    contentSpec.style.flexShrink = 1.0;
     
     // Horizontal spec for avatar
     ASStackLayoutSpec *avatarContentSpec =
diff --git a/examples_extra/ASTraitCollection/Sample/KittenNode.m b/examples_extra/ASTraitCollection/Sample/KittenNode.m
index 70cb9de1..6643f03b 100644
--- a/examples_extra/ASTraitCollection/Sample/KittenNode.m
+++ b/examples_extra/ASTraitCollection/Sample/KittenNode.m
@@ -91,8 +91,8 @@ static const CGFloat kInnerPadding = 10.0f;
   _textNode = [[ASTextNode alloc] init];
   _textNode.attributedText = [[NSAttributedString alloc] initWithString:[self kittyIpsum]
                                                                attributes:[self textStyle]];
-  _textNode.style.flexShrink = YES;
-  _textNode.style.flexGrow = YES;
+  _textNode.style.flexShrink = 1.0;
+  _textNode.style.flexGrow = 1.0;
   [self addSubnode:_textNode];
   
   return self;
diff --git a/examples_extra/ASTraitCollection/Sample/OverrideViewController.m b/examples_extra/ASTraitCollection/Sample/OverrideViewController.m
index 1148c907..7ca5f877 100644
--- a/examples_extra/ASTraitCollection/Sample/OverrideViewController.m
+++ b/examples_extra/ASTraitCollection/Sample/OverrideViewController.m
@@ -33,8 +33,8 @@ static NSString *kLinkAttributeName = @"PlaceKittenNodeLinkAttributeName";
     return nil;
   
   _textNode = [[ASTextNode alloc] init];
-  _textNode.style.flexGrow = YES;
-  _textNode.style.flexShrink = YES;
+  _textNode.style.flexGrow = 1.0;
+  _textNode.style.flexShrink = 1.0;
   _textNode.maximumNumberOfLines = 3;
   [self addSubnode:_textNode];
   
diff --git a/examples_extra/BackgroundPropertySetting/Sample/DemoCellNode.swift b/examples_extra/BackgroundPropertySetting/Sample/DemoCellNode.swift
index a6611b0a..8ce79266 100644
--- a/examples_extra/BackgroundPropertySetting/Sample/DemoCellNode.swift
+++ b/examples_extra/BackgroundPropertySetting/Sample/DemoCellNode.swift
@@ -33,10 +33,10 @@ final class DemoCellNode: ASCellNode {
 	override func layoutSpecThatFits(constrainedSize: ASSizeRange) -> ASLayoutSpec {
 		let specA = ASRatioLayoutSpec(ratio: 1, child: childA)
 		specA.style.flexBasis = ASDimensionMakeWithPoints(1)
-		specA.style.flexGrow = 1
+		specA.style.flexGrow = 1.0
 		let specB = ASRatioLayoutSpec(ratio: 1, child: childB)
 		specB.style.flexBasis = ASDimensionMakeWithPoints(1)
-		specB.style.flexGrow = 1
+		specB.style.flexGrow = 1.0
 		let children = state.isReverse ? [ specB, specA ] : [ specA, specB ]
 		let direction: ASStackLayoutDirection = state.isVertical ? .Vertical : .Horizontal
 		return ASStackLayoutSpec(direction: direction,
diff --git a/examples_extra/SynchronousKittens/Sample/KittenNode.mm b/examples_extra/SynchronousKittens/Sample/KittenNode.mm
index 8c8ba288..87e2c40f 100644
--- a/examples_extra/SynchronousKittens/Sample/KittenNode.mm
+++ b/examples_extra/SynchronousKittens/Sample/KittenNode.mm
@@ -143,7 +143,7 @@ static const CGFloat kInnerPadding = 10.0f;
   CGSize imageSize = _isImageEnlarged ? CGSizeMake(2.0 * kImageSize, 2.0 * kImageSize)
                                       : CGSizeMake(kImageSize, kImageSize);
   _imageNode.size = ASRelativeSizeRangeMakeWithExactCGSize(imageSize);
-  _textNode.flexShrink = YES;
+  _textNode.flexShrink = 1.0;
   
   ASStackLayoutSpec *stackSpec = [[ASStackLayoutSpec alloc] init];
   stackSpec.direction = ASStackLayoutDirectionHorizontal;
diff --git a/examples_extra/VideoTableView/Sample/NicCageNode.mm b/examples_extra/VideoTableView/Sample/NicCageNode.mm
index 6e3d8ea4..7110143e 100644
--- a/examples_extra/VideoTableView/Sample/NicCageNode.mm
+++ b/examples_extra/VideoTableView/Sample/NicCageNode.mm
@@ -168,7 +168,7 @@ static const CGFloat kInnerPadding = 10.0f;
   CGSize videoNodeSize = _isImageEnlarged ? CGSizeMake(2.0 * kImageSize, 2.0 * kImageSize)
                                           : CGSizeMake(kImageSize, kImageSize);
   _videoNode.size = ASRelativeSizeRangeMakeWithExactCGSize(videoNodeSize);
-  _textNode.flexShrink = YES;
+  _textNode.flexShrink = 1.0;
   
   ASStackLayoutSpec *stackSpec = [[ASStackLayoutSpec alloc] init];
   stackSpec.direction = ASStackLayoutDirectionHorizontal;