CREATE UUID in Objective-C with ARC

gistfile1.m

// CREATE UUID in Objective-C with ARC

NSString* createUUID()
{
    CFUUIDRef uuid = CFUUIDCreate(kCFAllocatorDefault);
    CFStringRef uuidStr = CFUUIDCreateString(kCFAllocatorDefault, uuid);
    NSString *result = [NSString stringWithString:(__bridge NSString*)uuidStr];
    CFRelease(uuid);
    CFRelease(uuidStr);
    return result;
}