NSTimer.scheduledTimerWithTimeInterval in Swift Playground

Question

All the examples I\'ve seen on using the \"NSTimer.scheduledTimerWithTimeInterval\" within Swift show using the \"target: self\" parameter, but unfortunately this doesn\'t w

Answer 1

To get this to run directly within a Swift Playground, you need to embed the printFrom1To1000 function within a class and then set an instance of that class to the "target:" parameter instead of using "self".

Here's a full working example:

class myClass: NSTimer{
    func printFrom1To1000() {
        for counter in 0...1000 {
            var b = counter
        }
    }
}

let myClassInstance = myClass()

var timer = NSTimer.scheduledTimerWithTimeInterval(0,
    target: myClassInstance,
    selector: Selector("printFrom1To1000"),
    userInfo: nil,
    repeats: false
)
timer.fire()