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Re: super respondsToSelector



On Sat, May 31, 2008 at 3:16 PM, j o a r <email@hidden> wrote:
>
> On May 31, 2008, at 12:10 AM, Michael Ash wrote:
>
>> If you're adventurous and foolish you can extract your superclass
>> without needing to hard-code any class names:
>>
>> #import <objc/objc-runtime.h>
>> ...
>> Class superclass = ((struct objc_super *)super)->class;
>>
>> But this is probably a poor idea to use in practice....
>
>
> Why not simply:
>
>        [[self superclass] instancesRespondToSelector:...]
>
> ?

Assume the following class hierarchy:

A <- B <- C <- D <- E

In the implementation of B, you write [self superclass]. Now your
method executes with self set to an instance of E. What do you get?

Mike
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References: 
 >super respondsToSelector (From: Russ McBride <email@hidden>)
 >Re: super respondsToSelector (From: Ken Thomases <email@hidden>)
 >Re: super respondsToSelector (From: "Michael Ash" <email@hidden>)
 >Re: super respondsToSelector (From: j o a r <email@hidden>)



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