iOS 數組 字典新寫法

1.數組

NSArray *array = @[元素一,元素二,元素三];  

 NSArray *array = @[@"1",@"2",@"3"];

 NSLog(@"array = %@",array);

2.字典 

NSDictionary *dic = @{[NSNumber numberWithInt:1]:@"a1",

                      [NSNumber numberWithInt:2]:@"a2",

                      [NSNumber numberWithInt:3]:@"a3",

                     };

NSLog(@"dic = %@",dic);

@[];

@{

   key:value,

  key:value,

  key:value,

 };