Timer.scheduledTimer Swift 3 pre-iOS 10 compatibility

Question

I need to schedule a Timer for firing a function every second but I see that in Xcode 8 beta 3 the scheduledTimer is only available for iOS 10.

Is there any alternat

Answer 1

Swift 3

func runCode(in timeInterval:TimeInterval, _ code:@escaping ()->(Void))
{
    DispatchQueue.main.asyncAfter(
        deadline: .now() + timeInterval,
        execute: code)
}

func runCode(at date:Date, _ code:@escaping ()->(Void))
{
    let timeInterval = date.timeIntervalSinceNow
    runCode(in: timeInterval, code)
}

func test()
{
    runCode(at: Date(timeIntervalSinceNow:2))
    {
        print("Hello")
    }

    runCode(in: 3.0)
    {
        print("World)")
    }
}