title: How to convert string to utf8 encoding?
body: <p>I am reading my app directory like this</p>
  
  <pre><code>NSArray *pathss = NSSearchPathForDirectoriesInDomains(NSDocumentDirectory, NSUserDomainMask, YES);
  NSString *documentsDirectorys = [pathss objectAtIndex:0];
  NSError * error;
  NSMutableArray * directoryContents =  [[NSFileManager defaultManager]
                              contentsOfDirectoryAtPath:documentsDirectorys error:&amp;error];
  </code></pre>
  
  <p>the output i get:</p>
  
  <pre><code>"Forms_formatted.pdf",
  "fund con u\U0308u\U0308.pdf",
  "hackermonthly-issue.pdf",
  </code></pre>
  
  <p>these are the files name. my question, how come i able to convert this name "fund con u\U0308u\U0308.pdf" to correct format. thanks in advance</p>