title: How to convert wchar_t to NSString?
body: <p>I have wchar_t buffer [100] . Sometimes it needed for Unicode letters, sometimes is not.</p>
  
  <p>I need to convert it to NSString.</p>
  
  <p>I'm using  <code>NSString *str = [NSString string:(char *)buffer];</code> to conver it. </p>
  
  <p>When I'm trying to NSLog my NSString, sometimes it getting right result, but sometimes is not.</p>
  
  <p>Did I miss something?</p>
  
  <p>Thanks!</p>