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 (Cocoa-dev@lists.apple.com) 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: https://lists.apple.com/mailman/options/cocoa-dev/archive%40mail-archive.com This email sent to arch...@mail-archive.com
