Migrate to Swift 3

Transcript

1. MIGRATE TO SWIFT 3
2. FRANCIS CHONG @SIUYING
4. HTTPS://GETFINCH.ES
5. ▸ Swift evolution ▸ What's new in Swift 3 ▸ Migration to Swift 3
6. SWIFT EVOLUTION
7. SWIFT 1
11. NSString* content = [[[listItemView text] text] stringByTrimmingCharactersInSet: [NSCharacterSet whitespaceAndNewlineCharacterSet]] let content = listItemView.text.stringByTrimmingCharactersInSet( NSCharacterSet.whitespaceAndNewlineCharacterSet())
12. NEW LANGUAGE OPTIMIZED FOR EASY TRANSITION
13. SWIFT 2
14. SWIFT 2.0 ▸ Error Handling
15. SWIFT 2.0 ▸ Error Handling ▸ Protocol Extension
16. SWIFT 2.0 ▸ Error Handling ▸ Protocol Extension ▸ #available(iOS 9.0, *)
17. SWIFT 2.0 ▸ Error Handling ▸ Protocol Extension ▸ #available(iOS 9.0, *) ▸ nullability in UIKit/AppKit
18. SWIFT 2.2 ▸ #if(swift>=2.0)
19. SWIFT 2.2 ▸ #if(swift>=2.0) ▸ #selector
20. SWIFT 2.2 ▸ #if(swift>=2.0) ▸ #selector ▸ deprecated C style loops
21. NEW IDEAS WITH COMPATIBILITY
22. SWIFT 3
23. WHAT'S NEW IN SWIFT 3
24. GRAND RENAMING
25. GRAND RENAMING ▸ API Design Guidelines
26. GRAND RENAMING ▸ API Design Guidelines ▸ Apply API Guidelines to the Standard Library
27. GRAND RENAMING ▸ API Design Guidelines ▸ Apply API Guidelines to the Standard Library ▸ Better Translation of Objective-C APIs Into Swift
28. FIRST PARAMETER // Swift 2 func moveToPoint(_: CGPoint) moveToPoint(point)
29. FIRST PARAMETER // Swift 2 func moveToPoint(_: CGPoint) moveToPoint(point) // Swift 3 func move(to point: CGPoint) move(to: point)
30. CAPITALIZATION ON ENUM CASES // Swift 2 UIInterfaceOrientationMask.Landscape NSTextAlignment.Right
31. CAPITALIZATION ON ENUM CASES // Swift 2 UIInterfaceOrientationMask.Landscape NSTextAlignment.Right // Swift 3 UIInterfaceOrientationMask.landscape NSTextAlignment.right
32. OMIT NEEDLESS WORDS // Swift 2 let content = listItemView.text.stringByTrimmingCharactersInSet( NSCharacterSet.whitespaceAndNewlineCharacterSet())
33. OMIT NEEDLESS WORDS // Swift 2 let content = listItemView.text.stringByTrimmingCharactersInSet( NSCharacterSet.whitespaceAndNewlineCharacterSet()) // Swift 3 let content = listItemView.text.trimming(.whitespaceAndNewlines)
34. MODERNIZED GCD // Swift 2 let queue = dispatch_queue_create("com.test.myqueue", nil) dispatch_async(queue) { print("Hello World") }
35. MODERNIZED GCD // Swift 2 let queue = dispatch_queue_create("com.test.myqueue", nil) dispatch_async(queue) { print("Hello World") } // Swift 3 let queue = DispatchQueue(label: "com.test.myqueue") queue.async { print("Hello World") }
36. MODERNIZED COREGRAPHICS // Swift 2 let ctx = UIGraphicsGetCurrentContext() let rectangle = CGRect(x: 0, y: 0, width: 512, height: 512) CGContextSetFillColorWithColor(ctx, UIColor.blueColor().CGColor) CGContextSetStrokeColorWithColor(ctx, UIColor.whiteColor().CGColor) CGContextSetLineWidth(ctx, 10) CGContextAddRect(ctx, rectangle) CGContextDrawPath(ctx, .FillStroke) UIGraphicsEndImageContext()
37. MODERNIZED COREGRAPHICS // Swift 3 if let ctx = UIGraphicsGetCurrentContext() { let rectangle = CGRect(x: 0, y: 0, width: 512, height: 512) ctx.setFillColor(UIColor.blue().cgColor) ctx.setStrokeColor(UIColor.white().cgColor) ctx.setLineWidth(10) ctx.addRect(rectangle) ctx.drawPath(using: .fillStroke) UIGraphicsEndImageContext() }
38. OPTIMIZED FOR ELOQUENT SWIFT
39. SHOULD I MIGRATE?
40. SHOULD I MIGRATE? ▸ New project
41. SHOULD I MIGRATE? ▸ New project ▸ Objective-C project with some Swift code?
42. SHOULD I MIGRATE? ▸ New project ▸ Objective-C project with some Swift code? ▸ Swift 2 project with no Dependencies?
43. SHOULD I MIGRATE? ▸ New project ▸ Objective-C project with some Swift code? ▸ Swift 2 project with no Dependencies? ▸ Swift 2 project with many external dependencies?
44. WHAT VERSION SHOULD I MIGRATE?
45. YOU CANNOT MIXED SWIFT 2.2/2.3/3.0 IN SAME PROJECT
46. PRE MIGRATION
47. MIGRATE YOUR DEPENDENCIES pod 'HidingNavigationBar', git: "https://github.com/siuying/HidingNavigationBar.git", branch: "swift3" pod 'CocoaLumberjack/Swift', git: "https://github.com/siuying/CocoaLumberjack.git", branch: "xcode8" pod 'UIColor_Hex_Swift', git: "https://github.com:e-Sixt/UIColor-Hex-Swift.git", branch: "Swift-3.0" pod 'RxSwift', git: "https://github.com/ReactiveX/RxSwift.git", branch: "swift-3.0" pod 'RxDataSources', git: "https://github.com/siuying/RxDataSources.git", branch: "swift3" pod 'RxOptional', git: "https://github.com/RxSwiftCommunity/RxOptional.git", branch: "swift-3.0"
48. ONLY UPDATE YOUR OWN PROJECT
49. MIGRATOR ▸ Rename Foundation classes ▸ Rename enum and static names ▸ Rename methods and fields ▸ Replace changed code (Collection/Dispatch/CoreGraphics)
50. POST MIGRATION ▸ Fix compile error ▸ Read API Design Guidelines ▸ Update to API Design Guidelines
51. POST MIGRATION ▸ Fix compile error ▸ Read API Design Guidelines ▸ Update to API Design Guidelines
52. The End