objective-c - ObjectiveCでallocを使用する目的

Question

違いは何ですか

 NSNumber *number = [[NSNumber alloc]initWithInt:13];

と

NSNumber *number = [NSNumber initWithInt:13];

両方が同じ目的を解決するのに、なぜ割り当てるのですか？

Answer 1

Answer 2

Graham Lee already gave the correct answer that's why you should accept it as the correct one. Nowadays, in my opinion [NSNumber numberWithInt:42]; is just a short cut of [[NSNumber alloc] initWithInt:42]