Swift on a Deadline

Transcript

1. Swift [on a deadline] @orta

2. Full writeup on Artsy blog @orta

3. Artsy @orta

4. OSS by Default @orta

5. Kiosk @orta

6. @orta

7. @orta

8. @orta

9. Eidolon @orta

10. I ❤ languages @orta

11. Obj-C // // main.m // snapshots // // Created by

    orta therox on 15/12/2007. // Copyright __MyCompanyName__ 2007 . All rights reserved. // @orta

12. ❤ ruby @orta

13. ! swift @orta

14. Good bits @orta

15. $0 $1 // Add subviews cellSubviews.map{ self.contentView.addSubview($0) } @orta

16. Overloading public func ==(lhs: UIStoryboardSegue, rhs: SegueIdentifier) -> Bool {

    return lhs.identifier == rhs.rawValue } override func prepareForSegue(segue: UIStoryboardSegue, sender: AnyObject?) { if segue == .ShowSaleArtworkDetails { let saleArtwork = sender as SaleArtwork! ... } } @orta

17. Lazy lazy var keypadSignal:RACSignal! = self.keypadContainer.keypad?.keypadSignal lazy var clearSignal:RACSignal! =

    self.keypadContainer.keypad?.rightSignal lazy var deleteSignal:RACSignal! = self.keypadContainer.keypad?.leftSignal lazy var provider:ReactiveMoyaProvider<ArtsyAPI> = Provider.sharedProvider @orta

18. Clo-uncs func isZeroLengthString(string:AnyObject!) -> AnyObject! { return countElements(string as String)

    == 0 } ... let numberIsInvalidSignal = RACObserve(bidDetails.newUser, "phoneNumber").map(isZeroLengthString) RAC(confirmButton, "enabled") <~ numberIsInvalidSignal.notEach() @orta

19. Inline @IBOutlet var bidButton: Button! @IBAction func bidButtonTapped(sender: AnyObject) {

    let identifier = hasAlreadyPlacedABid ? SegueIdentifier.PlaceAnotherBid : SegueIdentifier.ConfirmBid performSegue(identifier) } @orta

20. Language Coupling @orta

21. Xcode @orta

22. @orta

23. Quotes @orta

24. In just six months, Swift’s high performance and clean syntax

    have made it the most popular way to find out that SourceKitService Terminated — @Horse_iOS // https://twitter.com/Horse_iOS/status/533027167488454656 @orta

25. There is so much you cannot do with Swift, my

    code is littered with @objc. NSObject and a whole load more legacy #SwiftLang — @ColinEberhardt - ( Shinobi Controls ) // https://twitter.com/ColinEberhardt/status/ 531506177180700673 @orta

26. I started looking at Swift today and I've restarted the

    playground at least 20 times in the past hour. Hard to get excited about this… — @chockenberry - ( Twitteriffic.app ) // https://twitter.com/chockenberry/status/ 532270455537692672 @orta

27. I’m getting multiple SourceKitService crashed for every(!) line I write

    in this Swift project. This stuff is far from ready… — @pieteromvlee - ( Sketch.app ) [^om] // https://twitter.com/pieteromvlee/status/ 531534471708020736 @orta

28. For all the crap I give #swift, the syntax is

    still much nicer than ObjC. Hopefully the expressiveness of ObjC is brought quickly. — @owensd - ( MS Office ) // https://twitter.com/owensd/status/524972593774743553 @orta

29. Issues @orta

30. Completion @orta

31. Lib Code Signing @orta

32. Git Submodules @orta

33. No Incremental Builds @orta

34. Code Signing @orta

35. Playgrounds @orta

36. No Pch Files @orta

37. Stack Trace @orta

38. RAC @orta

39. Swift + RAC @orta

40. func waitForBidResolution () -> RACSignal { return self.pollForUpdatedSaleArtwork().then { [weak

    self] (_) in return self == nil ? RACSignal.empty() : self!.checkForMaxBid() } .doNext { _ in self.bidIsResolved = true return // If polling fails, we can still show bid confirmation. Do not error. } .catchTo( RACSignal.empty() ) } src @orta

41. bidderNetworkModel.createOrGetBidder().doError { (error) -> Void in self.bidderError() } .then {

    if !self.placingBid { ARAnalytics.event("Registered New User Only") return RACSignal.empty() } ARAnalytics.event("Started Placing Bid") return self.placeBid() } .then { [weak self] (_) in if self == nil { return RACSignal.empty() } self?.bidCheckingModel = self?.bidCheckingModel ?? self?.createBidCheckingModel() if self?.placingBid == false { return RACSignal.empty() } return self!.bidCheckingModel.waitForBidResolution() } .subscribeCompleted { [weak self] (_) in self?.finishUp() return } src @orta

42. @orta

43. @orta

44. The Future of CocoaPods @orta

45. Wait a year @orta

46. github.com/artsy/eidolon @orta

47. @orta