> On Aug 6, 2016, at 1:46 AM, Trygve Inda <cocoa...@xericdesign.com> wrote: >> For example, I would need to add items with ID# 204, 765, 983, 124, and 458 >> to the array. This seems like with Core Data it would be 5 different >> fetches. Or is there some efficient way to fetch these 5 items in one >> request? > > You could add an entity to your data model that represents the custom > collection. It would have an attribute that is a one-to-many relationship to > InterestingObject. If you only have one of those manually-constructed tables, > your data store would only contain one instance of this entity. That's > perfectly okay. > > --Andy > >
I can't do that at run time though. I need the user to be able to build custom collections (like a custom iTunes playlist) that is a subset of the full collection but not by any simple predicate criteria. _______________________________________________ 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
