Re: super respondsToSelector
Re: super respondsToSelector
- Subject: Re: super respondsToSelector
- From: "Michael Ash" <email@hidden>
- Date: Sat, 31 May 2008 15:23:58 +0800
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
_______________________________________________
Cocoa-dev mailing list (email@hidden)
Please do not post admin requests or moderator comments to the list.
Contact the moderators at cocoa-dev-admins(at)lists.apple.com
Help/Unsubscribe/Update your Subscription:
This email sent to email@hidden