utilities.swift

//You can put those functions in an external file. Call it for example "Utilities.swift"

//Random number between ranges
func random(min min: Int, max: Int) -> Int {
    return Int(arc4random_uniform(UInt32(max - min))) + min
}

func random(range: Range<Int>) -> Int {
    return random(min: range.startIndex, max: range.endIndex)
}

//You can call it like that:
random(-10...10)
random(0...1)
random(-10...10)
random(-10...10)


//delay a function after a certain amount of time
func delay(delay: Double, fn:() -> ()) {
    dispatch_after(
        dispatch_time(
            DISPATCH_TIME_NOW,
            Int64(delay * Double(NSEC_PER_SEC))
        ),
        dispatch_get_main_queue(), fn)
}


//You can call it like so where the 0.5 is the waiting time in seconds
delay(0.5) {
    print("hello")
}