The newest super hissatsu-waza of iOS app development

Transcript

1. ඞࡴ ࠷৽iOSΞϓϦ։ൃ௒ɹɹٕ

2. cockscomb

3. None

4.  WATCH SPORT
 42mm Space Gray Aluminum Case with Black

   Sport Band

5. ඞࡴ ࠷৽iOSΞϓϦ։ൃ௒ɹɹٕ

6. ඞࡴ ΞϯϥοϓϋϦέʔϯ

7. let intLike = ["12.3", "45", "6-7-8"] let results = intLike.map

   { $0.toInt() } println(results) // => [nil, Optional(45), nil]

8. let intLike = ["12.3", "45", "6-7-8"] let results = intLike.map

   { $0.toInt() }.filter { $0 != nil }.map { $0! } println(results) // => [45]

9. let intLike = ["12.3", "45", "6-7-8"] let results = intLike.flatMap

   { $0.toInt().map { [ $0 ] } ?? [] } println(results) // => [45] New in Swift 1.2

10. ΞϯϥοϓϋϦέʔϯ

11. ඞࡴ ਅۭΦϖϨʔγϣϯ࢐Γ

12. class DragonOperation: NSOperation { let string: String var result: String?

    init(_ string: String) { self.string = string } override var asynchronous: Bool { return true } ... override func start() { if cancelled { internalFinished = true return } internalExecuting = true let queue = dispatch_get_global_queue( QOS_CLASS_UTILITY, 0) dispatch_async(queue) { self.result = self.string.lowercaseString self.internalExecuting = false self.internalFinished = true } } }

13. private var internalExecuting: Bool = false { willSet { willChangeValueForKey("isExecuting")

    } didSet { didChangeValueForKey("isExecuting") } } override var executing: Bool { return internalExecuting } private var internalFinished: Bool = false { willSet { willChangeValueForKey("isFinished") } didSet { didChangeValueForKey("isFinished") } } override var finished: Bool { return internalFinished }

14. let waza = DragonOperation("Z") waza.completionBlock = { if let result

    = waza.result { println(result) // => "z" } } waza.start()

15. let oraora = ["X", "Y", "Z"].map { DragonOperation($0) } let

    queue = NSOperationQueue() dispatch_async(dispatch_queue_create("Hissatsu", nil)) { queue.addOperations(oraora, waitUntilFinished: true) dispatch_sync(dispatch_get_main_queue()) { let results = oraora.flatMap { $0.result.map { [ $0 ] } ?? [] } println(results) // => ["x", "y", "z"] } }

16. ਅۭΦϖϨʔγϣϯ࢐Γ

17. ඞࡴ ΠχϡϝϨΠτόελʔ

18. let fonts = "/System/Library/Fonts" let files = NSFileManager().enumeratorAtPath(fonts)! while let

    path: AnyObject = files.nextObject() { println(path) }

19. struct GeneratorOfNSEnumerator<T> : GeneratorType, SequenceType { private let enumerator: NSEnumerator

    init(_ enumerator: NSEnumerator) { self.enumerator = enumerator } mutating func next() -> T? { return self.enumerator.nextObject() as! T? } func generate() -> GeneratorOfNSEnumerator<T> { return GeneratorOfNSEnumerator<T>(self.enumerator) } } let fonts = "/System/Library/Fonts" let files = NSFileManager().enumeratorAtPath(fonts)! for path in GeneratorOfNSEnumerator<String>(files) { println(path) }

20. let fonts = "/System/Library/Fonts" let files = NSFileManager().enumeratorAtPath(fonts)! for path

    in files { println(path) } New in Swift 1.2

21. ΠχϡϝϨΠτόελʔ

22. ඞࡴ γϟυ΢ɾΞΫςΟϏςΟ

23. let title = "Apple" let URL = NSURL(string: "http://www.apple.com/")! UIActivityViewController(activityItems:

    [title, URL], applicationActivities: nil)

24. class SharableTitle: NSObject, UIActivityItemSource { let title: String? init(title: String?)

    { self.title = title } func activityViewControllerPlaceholderItem( activityViewController: UIActivityViewController) -> AnyObject { return title ?? "" } func activityViewController( activityViewController: UIActivityViewController, itemForActivityType activityType: String) -> AnyObject? { if activityType == UIActivityTypePostToTwitter || activityType == UIActivityTypePostToFacebook { return title } else { return nil } } func activityViewController( activityViewController: UIActivityViewController, subjectForActivityType activityType: String?) -> String { return title ?? "" } }

25. let title = "Apple" let URL = NSURL(string: "http://www.apple.com/")! UIActivityViewController(

    activityItems: [SharableTitle(title: title), URL], applicationActivities: nil)

26. γϟυ΢ɾΞΫςΟϏςΟ

27. ඞࡴ ΦʔαϜϑΝϯΫγϣϯίʔϧ

28. class Awesome { func awesome(string: String) -> String { return

    string.uppercaseString } } let a = Awesome() Awesome.awesome(a)("Awesome") // => "AWESOME"

29. class SuperAwesome: Awesome { override func awesome(string: String) -> String

    { return string.lowercaseString } } let s = SuperAwesome() Awesome.awesome(s)("Awesome") // => "awesome"

30. ΦʔαϜϑΝϯΫγϣϯίʔϧ

31. ඞࡴ ΞϯϥοϓϋϦέʔϯ ਅۭΦϖϨʔγϣϯ࢐Γ ΠχϡϝϨΠτόελʔ γϟυ΢ɾΞΫςΟϏςΟ ΦʔαϜϑΝϯΫγϣϯίʔϧ

32. ඞࡴ ࠷৽iOSΞϓϦ։ൃ௒ɹɹٕ