ios - Do something every x minutes in Swift

Question

How can I run a function every minute? In JavaScript I can do something like setInterval, does something similar exist in Swift?

Wanted output:

Hello World once a minute...

Answer 1

var helloWorldTimer = NSTimer.scheduledTimerWithTimeInterval(60.0, target: self, selector: Selector("sayHello"), userInfo: nil, repeats: true)

func sayHello() 
{
    NSLog("hello World")
}

Remember to import Foundation.

Swift 4:

 var helloWorldTimer = Timer.scheduledTimer(timeInterval: 60.0, target: self, selector: #selector(ViewController.sayHello), userInfo: nil, repeats: true)

 @objc func sayHello() 
 {
     NSLog("hello World")
 }