On 17 Jun 2010, at 17:47, Matt Neuburg wrote: > There is an assertion often encountered in people's blogs, answers to > questions on forums, etc., that the proxy object provided by > mutableArrayValueForKey: is inefficient
This is wrong. The proxy only occurs a slight performance penalty over direct calling the accessor methods (in most cases 1 message send) > - in particular, that if you don't > also implement -countOfItems, -objectInItemsAtIndex:, > -insertObject:inItemsAtIndex:, and -removeObjectFromItemsAtIndex:, > then every change in the mutable array through the proxy replaces the whole > array. Is this true? Thx - m. This is true. How else could the proxy do its work? The docs are pretty helpful on how the proxy decides what to do. Mike._______________________________________________ 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
