Created
April 21, 2019 12:46
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class Debouncer { | |
private let delay: DispatchTimeInterval | |
private let queue: DispatchQueue | |
private var previousFiredTime: DispatchTime = .now() | |
init(delay: DispatchTimeInterval, queue: DispatchQueue = .main) { | |
self.delay = delay | |
self.queue = queue | |
} | |
func throttle(_ block: @escaping () -> Void) -> Void { | |
previousFiredTime = .now() | |
queue.asyncAfter(deadline: .now() + delay) { [weak self, delay] in | |
guard let self = self else { return } | |
let minimumDelay = self.previousFiredTime + delay | |
if .now() < minimumDelay { return } | |
self.previousFiredTime = .now() | |
block() | |
} | |
} | |
} |
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