title: Resizing UIViews
body: <p>If I need to resize or reposition a UIView, is there a better way to do it than the following?</p>
  
  <pre><code>view.frame = CGRectMake(view.frame.origin.x, view.frame.origin.y, view.frame.size.width, view.frame.size.height - 100);
  </code></pre>
  
  <p>Or in other words, is there a way to just say view.frame.size.height -= 100 through a non-readonly property?</p>