title: Is it efficient to use max float for boundingRectWithSize for height
body: <p>In Objective-C when calculating the size required for given text, we use <code>boundingRectWithSize:options:attributes:context:</code> with the size parameter set to the constraining size. Width is usually where the text should break with height being the more flexible axis. Mostly I have seen CGFLOAT_MAX used for height. I've also seen the height specified to the bounds of a parent view (or some similar reasonable value).</p>
  
  <pre><code>[someText boundingRectWithSize:CGSizeMake(maxWidth, CGFLOAT_MAX) options:NSStringDrawingUsesFontLeading|NSStringDrawingUsesLineFragmentOrigin attributes:attributes context:nil].size
  </code></pre>
  
  <p>My question is, does it matter? Is one method more efficient than the other?</p>