title: What is the meaning of this value '\x01'?
body: <p>I <code>NSLog</code> <code>self.isViewLoaded</code> and it prints <code>'\x01'</code> what does it means? I was thinking of a <code>BOOL</code> return.  </p>
  
  <p>I want to check whether my view is already loaded (I want  to know if <code>viewWillAppear:</code> call again) so I checked it like this,</p>
  
  <pre><code>if(self.isViewLoaded &amp;&amp; self.window.view) {
      //... do something
  }
  </code></pre>
  
  <p>but I'm not able to check it, any suggestion with this? </p>