數組之makeObjectsPerformSelector:withObject:

- (void)makeObjectsPerformSelector:(SEL)aSelector; - (void)makeObjectsPerformSelector:(SEL)aSelector withObject:(id)argument; 這是 NSArray和NSSet的兩個方法，相信你們不多用，它相似於 for循環，但有效率高於for循環 makeObjectsPerformSel

>>阅读原文<<