What's new in Xcode 9.3 and iOS 11.3

1. What’s new in
iOS 11.3/Xcode 9.3
CocoaCoders 21st March 2018

2. iOS 11.3 (User Facing)
• New Animoji
• Messages on iCloud
• Health Records
• AirPlay 2 (Anyone seen a difference?)

3. iOS 11.3 (Developer)
• http://codeworkshop.net/objc-diff/sdkdiffs/ios/11.3/
• Highlights:
• ARKit 1.5 Enhancements (More Later)
• StoreKit SKAdNetwork
• Metal Performance Shaders (?)
• ClassKit (? - Next Tuesday?)

4. New in ARKit 1.5
• Recognizing Images in an AR Experience (Sample Code)
• Vertical Plane Detection
• More accurately map irregularly shaped surfaces like circular tables
• 50 percent greater resolution and supports auto-focus for an even
sharper perspective

5. New in Xcode 9.3
• Deprecated 32-bit macOS Apps
• The new Energy organizer shows logs generated when your app…
[causes] battery drain
• Renamed “Blame” view
• compiler now warns for more cases of non-exclusive memory
access

6. New in Swift 4.1
• #if canImport(UIKit) & #if targetEnvironment(simulator)
• Reconciled APIs between the multiple forms of unsafe pointers
• defaults write com.apple.dt.Xcode SourceEditorDisableAntialiasing -bool YES
• Synthesized implementation of == is automatically added Equatable
• Source Breaking (Warning): flatMap -> compactMap for Optional filtering
• Conditional conformance [SE-0143] (Anyone have an actual good example?)

7. ARKit Resources
• https://9to5mac.com/2018/02/01/arkit-1-5-improvements-ios-11-3/
• https://developer.apple.com/documentation/arkit/
recognizing_images_in_an_ar_experience
• https://thenextweb.com/apple/2018/01/30/apples-arkit-update-in-
ios-11-3-is-next-level-good/
• https://www.imore.com/whats-new-arkit-ios-113
• http://www.idownloadblog.com/2018/01/24/hands-on-with-ios-11-3-beta/

8. More Resources
• https://www.hackingwithswift.com/articles/50/whats-new-in-swift-4-1
• https://developer.apple.com/go/?id=xcode-9.3-beta-rn
• https://developer.apple.com/go/?id=ios-11.3-sdk-rn
• http://codeworkshop.net/objc-diff/sdkdiffs/ios/11.3b2/
• http://codeworkshop.net/objc-diff/sdkdiffs/ios/11.3b3/
• http://codeworkshop.net/objc-diff/sdkdiffs/ios/11.3b4/
• http://help.apple.com/xcode/mac/current/#/dev36a5a9141