GUID generalasa iPhone-on

Felmerult ez a kerdes a stackoverflow-n is, ahol a CFUUID object-et ajanlottak illetve ezt a kodreszletet:

+ (NSString *)GetUUID
{
  CFUUIDRef theUUID = CFUUIDCreate(NULL);
  CFStringRef string = CFUUIDCreateString(NULL, theUUID);
  CFRelease(theUUID);
  return [(NSString *)string autorelease];
}