How can I make a function execute every second in swift?

Question

I want to add a score to the top of my scene in the game I am working on. The score is going to based on how long you last, and will increase every second. Thanks for the he

Answer 1

// For running a piece of code every second

///Runs every second, to cancel use: timer.invalidate()
@discardableResult public static func runThisEvery(
    seconds: TimeInterval,
    startAfterSeconds: TimeInterval,
    handler: @escaping (CFRunLoopTimer?) -> Void) -> Timer {
    let fireDate = startAfterSeconds + CFAbsoluteTimeGetCurrent()
    let timer = CFRunLoopTimerCreateWithHandler(kCFAllocatorDefault, fireDate, seconds, 0, 0, handler)
    CFRunLoopAddTimer(CFRunLoopGetCurrent(), timer, CFRunLoopMode.commonModes)
    return timer!
}