title: Segues are not performed
body: <p>I'm developing a login view. I'm using Parse for the backend. The idea is very regular. If the user has registered already the app lets him in with no additional inconvenience. I put this code in <code>viewDidLoad()</code>:</p>
  
  <pre><code>override func viewDidLoad() {
  
          super.viewDidLoad()
  
          if PFUser.currentUser() != nil {
  
              self.performSegueWithIdentifier("login", sender: self)
  
          }
      }
  </code></pre>
  
  <p>After the app is compiled, it goes through that block of code but the login segue are not performing. Please let me know your suggestions what's wrong with? Thank you so much in advance!</p>