Wie hängt man NSData an NSData in Objective-C an?

Question

Ich werde NSData an NSData in Objective-C anhängen.

Wie kann ich es tun?

Answer 1

NSMutableData *first_data = [NSMutableData dataWithContentsOfURL:self.firstURL]; 
NSMutableData *second_data = [NSMutableData dataWithContentsOfURL:self.secondURL]; 
[first_data appendData:second_data]; 
[first_data writeToURL:url atomically:YES];