title: Comparison function for Core Data NSFetchedResultsController
body: <p>I am using NSFetchedResultsController to section my data into separate sections. The main sortDescriptor I give is this:</p>
  
  <blockquote>
    <p>NSSortDescriptor *sortDescriptorSectionLetter = [[NSSortDescriptor alloc] initWithKey:@"sectionLetter" ascending:YES selector:@selector(localizedCompare:)]; </p>
  </blockquote>
  
  <p>Now my sectionLetter has a default value of "#". When the tableView is sectioned and presented, it places the '#' section at the top of the table. I want this to show up at the bottom of the list (like the Contacts app does it). But I can't figure out how to accomplish this. </p>
  
  <p>I've also tried different types of characters as the default instead of #, like � and ~, but this doesn't seem to work either. According to the Core Data Programming Guide, I can't pass in a customized comparison function here. </p>
  
  <p>So I'm not sure what my options are here (other than  doing the sectioning myself and losing all the FRC delegate goodness to reload my tableviews with animation). Any good ideas?</p>