title: iOS Simulator Crashing without an error or debugger output?
body: <p>My iOS Simulator is crashing and not giving me any output or an error for me to try and fix. The moment the app opens the screen goes black for 3 seconds and then crashes and goes back to the home screen on the Simulator. I have already added an exception breakpoint it did not break at any point in my code. I have no idea what the problem is. Here is my code:</p>
  
  <p>ViewController.swift</p>
  
  <pre><code>class ViewController: UIViewController {
  
  override func viewDidLoad() {
      super.viewDidLoad()
      // Do any additional setup after loading the view, typically from a nib.
  }
  
  override func didReceiveMemoryWarning() {
      super.didReceiveMemoryWarning()
      // Dispose of any resources that can be recreated.
  }
  
  @IBOutlet weak var strWordValue: UILabel!
  @IBOutlet weak var strInputField: UITextField!
  
  
  func textFieldShouldReturn(textField: UITextField) -&gt; Bool{
      textField.resignFirstResponder()
      performAction()
      return true;
  }
  
  @IBAction func performAction(){
  
          strWordValue.text = strInputField.text.wordValue.description
  
  }
  </code></pre>
  
  <p>main.swift</p>
  
  <pre><code>extension String {
      var letterValue: Int {
          if let found = find(Array("abcdefghijklmnopqrstuvwxyz"),Character(lowercaseString)) {
              return found + 1
          }
          return 0
      }
      var wordValue: Int {
          var result = 0
          for letter in self {
              result += String(letter).letterValue
          }
          return result
      }
  }
  </code></pre>
  
  <p>There may be an error in my code that I am "skimming" right over or a bug in Xcode. I am unsure about both.</p>
  
  <p>Any ideas on how to fix this error would be great.</p>
  
  <p>Thanks in advance.</p>