title: iOS - NSString to uint
body: <p>I've got a quick question; I want to convert the text in a textfield to an unsigned integer, and here's what I do:</p>
  
  <pre><code>uint nmbr = [textfield.text intValue];
  </code></pre>
  
  <p>will objective-c implicitly cast and interpret nmbr as an unsigned int or is there another way to do this?</p>