스위프트 3 - 도움말 GCD 클래스 변환

Question

스위프트 1.2로 작성된 타이머를 만드는 Grad Central Dispatch 클래스가 있습니다. 스위프트 3으로 변환하려고하는데 스위프트 3으로 다시 작성하는 방법을 찾을 수 없습니다.

어떤 도움이 필요하십니까? 여기

class GCDTimer { 

    private var _timer : dispatch_source_t? 

    init() { 

    } 

    private func _createTheTimer(interval : Double, queue : dispatch_queue_t, block : (() -> Void)) -> dispatch_source_t 
    { 
     let timer = dispatch_source_create(DISPATCH_SOURCE_TYPE_TIMER, 0, 0, queue); 
     if (timer != nil) 
     { 
      dispatch_source_set_timer(timer, dispatch_time(DISPATCH_TIME_NOW, Int64(interval * Double(NSEC_PER_SEC))), UInt64(interval * Double(NSEC_PER_SEC)), (1 * NSEC_PER_SEC)/10); 
      dispatch_source_set_event_handler(timer, block); 
      dispatch_resume(timer); 
     } 
     return timer; 
    } 


    func start(interval : Double, block : (() -> Void)) 
    { 
     let queue = dispatch_get_global_queue(DISPATCH_QUEUE_PRIORITY_DEFAULT, 0); 

     _timer = _createTheTimer(interval, queue: queue, block: block) 

    } 

    func stop() 
    { 
     if (_timer != nil) { 
      dispatch_source_cancel(_timer!); 
      _timer = nil; 
     } 
    } 
} 

Answer 1

, 내가 엑스 코드 그것을 위해 옵션 변환 사용 : -> 변환 -

편집> 현재 스위프트 구문에

class GCDTimer { 

    fileprivate var _timer : DispatchSource? 

    init() { 

    } 

    fileprivate func _createTheTimer(_ interval : Double, queue : DispatchQueue, block : (() -> Void)) -> DispatchSource { 
     let timer = DispatchSource.makeTimerSource(flags: DispatchSource.TimerFlags(rawValue: 0), queue: queue); 
     if (timer != nil) { 
      timer.setTimer(start: DispatchTime.now() + Double(Int64(interval * Double(NSEC_PER_SEC)))/Double(NSEC_PER_SEC), interval: UInt64(interval * Double(NSEC_PER_SEC)), leeway: (1 * NSEC_PER_SEC)/10); 
      timer.setEventHandler(handler: block); 
      timer.resume(); 
     } 
     return timer as! DispatchSource; 
    } 


    func start(_ interval : Double, block : (() -> Void)) { 
     let queue = DispatchQueue.global(priority: DispatchQueue.GlobalQueuePriority.default); 

     _timer = _createTheTimer(interval, queue: queue, block: block) 

    } 

    func stop() { 
     if (_timer != nil) { 
      _timer!.cancel(); 
      _timer = nil; 
     } 
    } 
} 

편집 :

gruntwork 후

)

class GCDTimer { 

    var timer: DispatchSourceTimer? 
    init() { } 

    func startTimer(deadline: DispatchTime,interval: DispatchTimeInterval,queue: DispatchQueue, 
       leeway: DispatchTimeInterval, block : @escaping (() -> Void)) { 
     timer?.cancel() 
     timer = DispatchSource.makeTimerSource(queue: queue) 
     timer?.scheduleRepeating(deadline: deadline, interval: interval, leeway: leeway) 
     timer?.setEventHandler { 
     block() 
     } 
    timer?.resume() 
    } 

    func stopTimer() { 
     timer?.cancel() 
     timer = nil 
    } 
} 

호프 티 도움이됩니다.