Wow. Woah. OK, sorry my ignorance offends. What in the world was I trying to do…I was trying to bind the selection index of a NSComboBox to a NSNumber because the Apple Cocoa bindings document for NSComboBox says the value can be bound to a NSNumber.
Using -init didn't seem so nonsensical to me. It could it init with 0. It could init with NaN. But, you're right, -init is not listed in the NSNumber class reference and that should have been a clue. Anyway, cool, I just decided to use -indexOfSelectedItem on a NSComboBox outlet when the sheet finishes. On Oct 13, 2012, at 8:52 PM, Ken Thomases <k...@codeweavers.com> wrote: > On Oct 13, 2012, at 9:49 PM, Randy Widell wrote: > >> Quick question… For some reason I cannot find an answer. >> >> I have a NSWindowController subclass and I want to bind the selection index >> of a NSComboBox to a NSNumber that is an IBOutlet of the NSWindowController >> subclass. I have a NSNumber object in the window's XIB and the object is >> linked to the outlet in the subclass, but the outlet is always nil. >> >> Is there something special about NSNumber? Other object types seem to work. > > How could that NSNumber be initialized? It could only be via -init. A quick > test here shows that [[NSNumber alloc] init] returns nil. I.e. it fails, > because that's a nonsensical thing to do. > > So is putting an NSNumber in a NIB. What in the world are you trying to do? > In general, it makes no sense to put things other than views or controller > objects into NIBs. NSNumbers are value objects, suitable for the model layer > of your app. > > 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: https://lists.apple.com/mailman/options/cocoa-dev/archive%40mail-archive.com This email sent to arch...@mail-archive.com
