title: Tell if UITableView has scrolled to top
body: <p>I tried this:</p>
  
  <pre><code>- (void)scrollViewDidScrollToTop:(UIScrollView *)scrollView
  </code></pre>
  
  <p>But it didn't fire when I scrolled the table view to the top.</p>
  
  <pre><code>- (void)scrollViewDidScroll:(UIScrollView *)scrollView
  </code></pre>
  
  <p>Does fire so the delegate isn't the problem.</p>
  
  <p>In viewDidLoad I also set <code>[myTbl setDoesScrollToTop:YES];</code></p>