oc基础的纪录

    不可变数组

    NSArray *array = [[NSArray alloc]initwithObjects:"One,Two,Three",nil] ;

    NSLog(@"%@,array");

    快速枚举法

    for(id objin array) {

        NSLog(@%@,obj);

    }

    

    可变数组

    NSMutableArray *array = [[NSMutableArray alloc]init];

    [array add object:@"one"];  //加入数组

  

    NSMutableDictionary *dic =            [[NSMutableDictionaryalloc]initWithObjectsAndKeys:@"one",@"1",@"two",@"2",nil];

    [dic setObject:@"one"forKey:@"1"];

    [dic setObject:@"two"forKey:@"2"]; //增加键值对

    

    NSLog(@"%@",dic)