makeObjectsPerformSelector:SEL 数组里面所有的对象元素都会执行右面方法
NSArray *arr = [NSArray array]; [arr makeObjectsPerformSelector:@selector(log)] - (void)log { NSLog(@"这里实现方法"); }
makeObjectsPerformSelector:SEL 数组里面所有的对象元素都会执行右面方法
NSArray *arr = [NSArray array]; [arr makeObjectsPerformSelector:@selector(log)] - (void)log { NSLog(@"这里实现方法"); }