title: Using a Swift String with NSData without NSString
body: <p>Is it possible to init a Swift string (not <code>NSString</code>) with the contents of an NSData object without creating an NSString first?</p>
  
  <p>I know I can use this with NSString:</p>
  
  <pre><code>var datastring = NSString(data data: NSData!, encoding encoding: UInt)
  </code></pre>
  
  <p>But how can I use a basic Swift String type? I thought Swift strings and NSStrings were interchangeable, do I really have to get the data out of NSData using NSString and then assign that value to a Swift string?</p>