How do I hide a variable from the view?

In objective C, I'm trying to make something hide from view. Could anyone tell me how to do it by using some sort of -(void) something {?

It's a variable, and I need to make it only appear when a certain variable is true. I want to know how to 开发者_开发知识库make that variable turn invisible all the time to start it off.

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If you don't declare it in the .h file, then it is hidden.

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You just do variable.hidden = YES;