title: Is it not possible to sort by a BOOL attribute, using NSSortDescriptor?
body: <p>I need to sort the rows in my sections, from <code>fetchedResultsController</code>.</p>
  
  <p>I'm trying to make sure the Entity with lastCell attribute set to <code>YES</code>, to be the last shown cell in it's section. Somehow it's always the first? Is this not possible?</p>
  
  <p>Ordering from timeStamp is working great. <code>lastCell</code> on the other hand doesn't seem to have any effect.</p>
  
  <pre><code>NSSortDescriptor *sortDescriptor1 = [[NSSortDescriptor alloc] initWithKey:@"timeStamp" ascending:NO];
  NSSortDescriptor *sortDescriptor2 = [[NSSortDescriptor alloc] initWithKey:@"lastCell"  ascending:NO];
  </code></pre>