# Tweet by [@keefmoon](http://twitter.com/keefmoon) on 2016-07-24 12:05:44 > [!INFO] Archived from [original tweet](http://twitter.com/keefmoon/status/757184991390470144) RT @rileytestut: Radar: Xcode Core Data Automatic Subclass Generation Uses Reference Types Instead of Value Types https://t.co/dCKYhztR5B