Re: Objective-C Question
Re: Objective-C Question
- Subject: Re: Objective-C Question
- From: Kyle Sluder <email@hidden>
- Date: Mon, 11 Mar 2013 14:18:34 -0700
On Mon, Mar 11, 2013, at 01:55 PM, Dave wrote:
> Not sure I understand:
>
> if from an Instance - Method, I do:
>
> [super someMehod];
>
> It calls -someMehod in the superclass.
>
> if from an instance + Method I do:
>
> [super someMethod], then surely it's an error because this isn't an
> instance?
No, it's not an error. Classes are instances of their metaclass; a
class's superclass is an instance of the superclass's metaclass.
Greg Parker explains:
http://www.sealiesoftware.com/blog/archive/2009/04/14/objc_explain_Classes_and_metaclasses.html
>
> So from a + method, what do:
>
> [super someMethod]; and
Invokes the superclass's (or an ancestor's) implementation of
+someMethod.
> [[self superclass] someMethod];
Sends +someMethod to the superclass, which will invoke the superclass's
implementation or the implementation of an ancestor.
--Kyle Sluder
_______________________________________________
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