OC的新语法主要针对3个有改变,一个是数组,一个是字典,另外一个就是nsnumber。
数组:
NSArray *arr =@[@"first",@"Second",@"Third"]; NSLog(@"The Second is : %@",arr[1]);
字典:
NSDictionary *dic =@{@"Key_1":@"Value_1",@"Key_2":@"Value_2",@"Key_3":@"Value_3"}; NSLog(@"the Key_2's Value is : %@",dic[@"Key_2"]);(新) NSLog(@"the Key_2's Value is : %@",[dicobjectForKey:@"Key_2"]);(旧)
Number:
NSNumber *number = [[NSNumberalloc] initWithInteger:5];(旧) NSNumber *number_1 =@9;(新) NSLog(@"number is :%@",number); NSLog(@"number_1 is : %@",number_1);