新的Objective-C语言文字

NSArray:

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NSInteger _appid = 12345; NSArray *array = @[ @"title", @(_appid)]; NSString *title = array[0]; array[0] = @"newTitle";

NSDictionary:

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NSDictionary *dict = @{ @"appid" : @(_appid), @"title" : _title, }; NSString *title = dict[@"title"]; dict[@"title"] = @"newTitle";

NSNumber:

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NSNumber *intNum = @123; NSNumber *floatNum = @1.23f; NSNumber *boolNum = @YES;