title: How to compare NSUUID
body: <p>What is the best (least code, fastest, most reliable) way to compare two <code>NSUUIDs</code>? </p>
  
  <p>Here is an example:</p>
  
  <pre><code>-(BOOL)isUUID:(NSUUID*)uuid1 equalToUUID:(NSUUID*)uuid2
  {
      return ... // YES if same or NO if not same
  }
  </code></pre>