> Objects: > - NSManagedObject *item - some managaged object > - NSArray *attributes - an array of the item's attributes > > Desired Result: > - a possibly smaller array of attribites where [item valueForKey:<an > attribute>] != nil. > > In code, I can simply iterate over the keys, perform the valueForKey, > and skip nil values. I played around with expressions and predicates to > solve this, to no avail.
Having the array of attributes unrolled separately is a little odd. Do you mean you have an array of attribute names from, say the entity, and you want to ask a MO for all its non-nil attribute values and get back an array of matching attribute names for those non-nil values? - Ben _______________________________________________ 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
