Swift on a Deadline

Trying to pull off a complex swift app on a deadline.

Meant to work well with this blog post: http://artsy.github.io/blog/2014/11/13/eidolon-retrospective/

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