On Aug 12, 2011, at 04:08 , Martin Hewitson wrote: > In an app I have a core data model which has a File entity which has a > boolean attribute isText. This attribute is declared in the corresponding > NSManagedObject subclass interface as > > @property (assign) BOOL isText; > > and in the implementation I do > > @dynamic isText; > > In Lion, accessing this with > > [file isText] > > works fine. But it doesn't work on Snow Leopard. There I have to do > > [[file valueForKey:@"isText"] boolValue] > > Is this expected behaviour? Was/is something broken on SL that was fixed on > Lion? Or is it now broken on Lion?
Yes. No. No. It's new on Lion that the internal property accessors referenced by @dynamic support scalar types directly. In the past, if you wanted the type of property "isText" to BOOL rather than NSNumber, you had to write a custom getter and setter to make it so. For as long as you need to support 10.6 and earlier, I think you'll have to supply the old-style custom implementations. I don't think I watched the 2011 WWDC video on Core Data, but it's possible this issue is discussed in there, and there may be a more elegant workaround. _______________________________________________ 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
