title: unrecognized selector sent to instance date picker - swift
body: <p>Simulator crashes after selecting a date from the picker. No idea why (noob here)</p>
  
  <pre><code>import UIKit
  
  class ViewController: UIViewController {
  
  @IBOutlet weak var dateLabel: UILabel!
  @IBOutlet weak var datePicker: UIDatePicker!
  
  override func viewDidLoad() {
      super.viewDidLoad()
      // Do any additional setup after loading the view, typically from a nib.
  
      datePicker.addTarget(self, action: Selector("dataPickerChanged:"), forControlEvents: UIControlEvents.ValueChanged)
  }
  
  func datePickerChanged(datePicker:UIDatePicker){
      var dateFormatter = NSDateFormatter()
  
      dateFormatter.dateStyle = NSDateFormatterStyle.ShortStyle
      dateFormatter.timeStyle = NSDateFormatterStyle.ShortStyle
  
      var strDate = dateFormatter.stringFromDate(datePicker.date)
      dateLabel.text = strDate
  
  }
  </code></pre>