title: Cannot convert value of type 'UInt' to expected argument type 'UnsafeMutablePointer<UInt>'
body: <p>I am trying to initialize a String from the content accessible by a URL:</p>
  
  <pre><code>actualresponse.response = String(contentsOfURL: url, usedEncoding: NSUTF8StringEncoding)
  </code></pre>
  
  <p>I get the following error thrown, pointing at the usedEncoding:</p>
  
  <blockquote>
    <p>Cannot convert value of type 'UInt' to expected argument type 'UnsafeMutablePointer'</p>
  </blockquote>
  
  <p>Can anyone tell me why this error is thrown and how I can fix it? </p>