ios - Information about current date as Label -

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I have problem with NSDate "write in current println" is easy to write current date how do I keep my current date as labels Can i This is my code: 

  var timer = NSTimer () override func viewDidLoad () {super.viewDidLoad () timer = NSTimer.scheduledTimerWithTimeInterval (1, target: auto, selector: selector ("Update "), UserInfo: Zero, Repeats: True) Date = NSDT () println (NSDate)}  

  let formatter = NSDateFormatter formatter.dateFormat =" yyyy-MM-dd "// Set the date some labels.

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