Ah, I see. so I need to send it to an instance of the class not the class it self. How would I do that?
Thanks, Josh. ________________________________ From: Jens Alfke <j...@mooseyard.com> To: Jim Kang <jimk...@gmail.com> Cc: Joshua Garnham <joshua.garn...@yahoo.co.uk>; cocoa-dev@lists.apple.com Sent: Thursday, 22 October, 2009 6:21:29 Subject: Re: Sending a Selector to another Class. On Oct 21, 2009, at 9:43 AM, Jim Kang wrote: That selector is a unique index that points to a method of a specific class. > No, that's not true of Objective-C (although it is of C++ method-pointers.) A selector is, basically, just a unique string: it defines a message, not a method, to use the old Smalltalk OOP terminology. Any class that implements a method with that name uses the same selector for it, regardless of inheritance. To be specific, if I create two unrelated classes A and B, each of which implements a -foo method, the selector @selector(foo) is used for both. Joshua's problem was, apparently, that he was trying to send an message to a class object instead of an instance, but the corresponding method was defined on instances, not the class. —Jens _______________________________________________ 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: http://lists.apple.com/mailman/options/cocoa-dev/archive%40mail-archive.com This email sent to arch...@mail-archive.com
