looks like there is no need to worry about loss of "if var" after all

Author: mattneub

bk2ch02p051ImageAndTraitCollection/ImageAndTraitCollection/MyView.swift

@@ -11,8 +11,7 @@ class MyView: UIView {
     }
 
     override func drawRect(rect: CGRect) {
-        if let im = self.image { // removed "if var", as this will be abolished soon
-            var im = im
+        if var im = self.image {
             if let asset = self.image.imageAsset {
                 let tc = self.traitCollection
                 im = asset.imageWithTraitCollection(tc)

bk2ch17p700PhotoKitImages/VignettePhotoExtension/PhotoEditingViewController.swift

@@ -51,7 +51,7 @@ class PhotoEditingViewController: UIViewController, PHContentEditingController,
 
         // orientation stuff worked out experimentally; I have no idea if it's right
 
-        if let output = self.displayImage, // removed if var, as it will be abolished
+        if let output = self.displayImage, // removed if var, perhaps unnecessarily but it's clearer without
             let orient = self.input?.fullSizeImageOrientation {
                 var output = output
                 if self.seg.selectedSegmentIndex == 0 {