In Objective C, why use `self == [className self]` in a class +initialize? -

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this question has answer here:

i've seen in example-- in class initialize, line have purpose?

+(void)initialize {    if (self == [toolcontroller self])    {       ...    } }

i have read in class method, self refers class , not object. in theory, wouldn't check result in true?

in mind, line resolve this: toolcontroller == toolcontroller

so that's why think result in true. missing something?

i think missing possibility self subclass of toolcontroller.

presumably in example you're reading, whatever happening in +[toolcontroller initialize] should happen when superclass (toolcontroller) initializes, , not happen additionally when subclasses of toolcontroller initialize.


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