title: Excluding from animation block
body: <pre><code>[UIView beginAnimations:nil context:NULL];
  [UIView setAnimationDuration:0.5];
  ...
  [UIView commitAnimations];
  </code></pre>
  
  <p>For example I need to animate frame's width conditionally, along with the rest of other modifications which are mandatory. The reason I can't put the code out of this block, because there is a function call within the block.
  How would I exclude some operations from within animation block?</p>