set集合_变长

//set可变集合

//便利初始化函数分配大小

NSMutableSet *mutableSet1 = [[NSMutableSet alloc] initWithCapacity:3];

NSMutableSet *mutableSet2 = [NSMutableSet setWithCapacity:3];

Z

//添加元素

[mutableSet1 addObject:@"aaa"];

[mutableSet1 addObject:@"BBB"];

[mutableSet1 addObject:@"bbb"];

NSLog(@"%@",mutableSet1);


 

//删除元素

[mutableSet1 removeObject:@"ccc"];

NSLog(@"%@",mutableSet1);


 

//遍历Set

NSArray *setArray = [mutableSet1 allObjects];

NSLog(@"%@",mutableSet1);