title: Composing unicode char format for NSString
body: <p>I have a list of unicode char "codes" that I'd like to print using <code>\u</code> escape sequence (e.g. <code>\ue415</code>), as soon as I try to compose it with something like this:</p>
  
  <pre><code>// charCode comes as NSString object from PList
  NSString *str = [NSString stringWithFormat:@"\u%@", charCode];
  </code></pre>
  
  <p>the compiler warns me about incomplete character code. Can anyone help me with this trivial task?</p>