On 5/28/09 11:25 AM, Ben Trumbull said: >> Specifically my entity has a 'transformable' attribute for which the >> values are a custom object class, and this object class has an ivar >> that is an NSMutableDictionary. The user can modify entries in this >> dictionary, and I would like this to cause the context to be flagged >> as dirty and to have the custom object flagged to be updated in the >> persistent store. > >Attributes can only be effectively immutable value types.
Rick, Once you understand Ben's comments, something else follows: mutating a ManagedObject's attribute wreaks havoc with undo. Undo after all keeps a history of changed attributes, and if you go mutating them, well... -- ____________________________________________________________ Sean McBride, B. Eng s...@rogue-research.com Rogue Research www.rogue-research.com Mac Software Developer Montréal, Québec, Canada _______________________________________________ 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
