title: What is difference passing YES and NO to 'endEditing' method call
body: <p>To resign first responder of subviews of a view, I may call <code>endEditing</code> method. I saw <code>YES</code> as <code>BOOL</code> parameter to pass into in sample code as</p>
  
  <pre><code>[self.view endEditing:YES]
  </code></pre>
  
  <p>I had 3 textfields in View which I called method, and it works to remove keyboard of any of 3 subviews.</p>
  
  <p>While I change parameter to NO as</p>
  
  <pre><code>[self.view endEditing:NO]
  </code></pre>
  
  <p>I saw nothing different, it seemed working in same way.</p>
  
  <p>I think I didn't make it clear that what really confused me. I read doc but didn't know what would happen if I passed YES but one of subview refused to resign...how could it?</p>