title: << operator in objective c enum?
body: <p>I was looking for something and got in to this enum is apple UITableViewCell.h.</p>
  
  <p>I am sorry if this is trivial but I wonder/curious  what is the point of this.</p>
  
  <p>I know the &lt;&lt; from ruby but I don't really understand this enum ?</p>
  
  <pre><code>enum {
      UITableViewCellStateDefaultMask                     = 0,
      UITableViewCellStateShowingEditControlMask          = 1 &lt;&lt; 0,
      UITableViewCellStateShowingDeleteConfirmationMask   = 1 &lt;&lt; 1
  };
  </code></pre>
  
  <p>Thanks</p>
  
  <p><strong>BTW</strong>
  Found it as a great way to learn coding, I am trying once in a day to get into the header files of at list on object.</p>
  
  <p>Shani</p>