title: How to debug iOS 8 extensions with NSLog?
body: <pre><code>- (void)viewDidLoad
  {
      NSLog(@"%s", __func__);
      // ...
  }
  </code></pre>
  
  <p>in <code>viewDidLoad</code> of an iOS 8 <em>extension</em>. the  <code>NSLog</code> outputs nothing in Xcode. <code>NSLog</code> works as usual in the container app though.</p>
  
  <p>How can I get output from debug messages from an extension?</p>