title: NSUserDefaults performance comparison
body: <p>Is there a difference in speed between the following two cases:</p>
  
  <p><strong>A:</strong></p>
  
  <pre><code>userName=[[NSUserDefaults standardUserDefaults] objectForKey:@"userName"];
  userEmail=[[NSUserDefaults standardUserDefaults] objectForKey:@"userEmail"];
  userId=[[[NSUserDefaults standardUserDefaults] objectForKey:@"userId"] intValue];
  </code></pre>
  
  <p><strong>B:</strong></p>
  
  <pre><code>userDictionary=[[NSUserDefaults standardUserDefaults] objectForKey:@"userDictionary"];
  userName=[userDictionary objectForKey:@"name"];
  userEmail=...etc...
  </code></pre>
  
  <p>Even though differences in speed might be extremely small, <em>technically</em>, are there performance differences?</p>