ivar

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Default values of ivars with enum type in Objective-c

I have an enum like this: typedef enum { ThingA, ThingB, ThingC } MyType; I have a class with an ivar declared in the interface like this:[详细]

2023-04-10 21:35 分类：问答
ivar check if it has been initialized and used

let\'s say I have an instance variable MyObject* test; @property(nonatomic, retain) MyObject* test; .m @synthesize test;[详细]

2023-04-10 05:59 分类：问答
Why do some ivars have a double underscore prefix?

When XCode creates synthesize statements in Apple\'s templates, you would see something like: @synthesize ivar=_ivar;[详细]

2023-04-06 04:58 分类：问答
Objective-C: Cast super instance variable in subclass?

In Objective-C, in the definition of a subclass (perhaps in the interface file), is it possible to cast an instance variable (ivar) that\'s inherited from the super class?[详细]

2023-03-20 21:24 分类：问答
Syntax for accessing instance variables? (Objective-C)

What is the proper syntax for accessing an instance variable in Objective-C? Assume we have this variable:[详细]

2023-03-13 16:37 分类：问答
How can I access one ivar from multiple scenes in Cocos2D?

Thank You for taking a look at my question! In my 开发者_如何学Pythongame I have several scenes. I have an IntroScene, a HomeScene, and a PlayingScene. Now, if I need to create a variable int playerSt[详细]

2023-03-01 17:46 分类：问答
How to create an ivar for searchDisplayController

following this question, how would I create an \"ivar\" as mentioned?Ran into this same issue and I\'m trying to work around it so apple will approve my 开发者_运维问答latest updateIn the header file:[详细]

2023-02-21 11:06 分类：问答
How to add a instance variable and use it in a custom UIButton

I created a custom UIButton like this @interface CustomButton : UIButton { NSString *firstLine; NSString *secondLine;[详细]

2022-12-28 10:57 分类：问答