On Nov 11, 2010, at 7:11 AM, Graham Cox wrote: > Just write a wrapper for -setObject:forKey: and -valueForKey: The first just > calls the same method on its (mutable) dictionary, the second can first check > for whether the value is actually present and if not kick off some task to > fetch it, or else just get it from the dictionary and return it.
You should not override -setValue:forKey: or -valueForKey: if you can avoid it. Instead, implement the methods -setValue:forUndefinedKey: and -valueForUndefinedKey:. They are precisely for implementing "dynamic" properties in this manner. Regards, Ken _______________________________________________ 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
