// once without parameters
Timer.once(1) {
    print("I have fired after 1 second")
}

// once with parameters
Timer.once(3, arguments: (magicNumber: 4, text: "Passed text to closure")) { magicNumber, text in
    print("I have magic number: \(magicNumber) and received this: \(text)")
}

// every without parameters
Timer.every(10) {
    print("I'm here for forever, visit every 10 second")
}

// every with parameters and func
var count = 0
var timer: NSTimer!

func didFiredTimer(repeatCount: Int) {
    count += 1
    if count == repeatCount {
        print("Timer will be invalidated!")
        timer.invalidate()
    }
}

timer = Timer.every(2, arguments: 4, completion: didFiredTimer)