title: Using Objective C/Cocoa to unescape unicode characters, ie \u1234
body: <p>Some sites that I am fetching data from are returning  UTF-8 strings, with the UTF-8 characters escaped, ie: <code>\u5404\u500b\u90fd</code></p>
  
  <p>Is there a built in cocoa function that might assist with this or will I have to write my own decoding algorithm.</p>