I can't Set UILable to nil in Swift : I have just started working with Swift. I have a table and I wanna Set it to nil so that I can use an action on it to change its text , right now without nil it shows "optional" text! 
 
    @IBOutlet var nameLable: UILabel!
    override func viewDidLoad() {
        super.viewDidLoad()
        // Do any additional setup after loading the view, typically from a nib.
    }

 

    @IBAction func helloworldaction(nameTextField: UITextField) {
       nameLable.text = "\(nameTextField.text)"
    }


but it shows errors when I change it to this:

 @IBOutlet var nameLable:  UILabel = nil

what should I do??