How can I change the value of a static variable in Objective-C?
Is this allowed?
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3what is your problem `variable=newValue;` is not working? – Anoop Vaidya Apr 10 '13 at 06:09
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@AnoopVaidya it just keeps the old value without error message or anything. – findusl Jan 21 '19 at 09:55
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@findusl: Try with overriding the class and the static variable. – Anoop Vaidya Jan 21 '19 at 10:00
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@anoopvaidya I need it for tests and I don't have control over the instantiation. I googled more it seems to be that you can't change static from a different file, changed it to extern and works now. – findusl Jan 21 '19 at 10:37
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You use the = operator to assign a value in the file where the static variable is visible.
Chuck
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@findusl: It sounds like what you were trying to do is change a static variable from *another* file, where the variable is not visible. What "static" means in C is basically "this variable is only visible in this file." Static variables are pretty common in Objective-C — it's how, for example, singletons are commonly implemented. When other files need to set the variable, a setter function or method is provided. – Chuck Jan 22 '19 at 16:56
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But the static variable is visible and usable in the other file. Just can't be changed. – findusl Jan 22 '19 at 17:03
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@findusl: I am very sure that is not the case with any mainstream compiler — that would violate the C standard. It's hard to say without seeing your code, but I'd guess you're creating a second, unrelated variable, rather than seeing the file's static variable. For example, if you have `static int x = 5;` in a header file, every file that imports that header would have a static variable named `x` that is unrelated to any other file's static variable named `x`. – Chuck Jan 22 '19 at 17:26
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Could be that that happens. Would explain the result since I wanted to change it for a different file. – findusl Jan 22 '19 at 17:29