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I found a tutorial about NSPersistentDocument, which was out-dated. The document is titled NSPersistentDocument Core Data Tutorial for Mac OS X v10.4. Is there any other newer version of the document? Or, is there alternative to this kind of tutorial?

Sangcheol Choi
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    `NSPersistentDocument` has barely changed since 10.4. In what way is the tutorial not working? – Tom Harrington Aug 07 '13 at 01:05
  • Thank you for your reply. I just wonder whether there are other updated one since we have some changes in Objective-C [link](https://developer.apple.com/videos/wwdc/2012/?id=405) for a new learner of Xcode and Objective-C like me. I want to hear what people have to say about this. I might have to wait until I could have some level of knowledge in Xcode and Objective-C to use that tutorial then. – Sangcheol Choi Aug 07 '13 at 17:57
  • There are new things in Objective-C, but the older styles still work. At the language level, nothing has been removed or even deprecated. – Tom Harrington Aug 07 '13 at 18:00
  • Thank you for the comment. I will use that tutorial. It is good to know that I am not reading an outdated material when there is an updated one. – Sangcheol Choi Aug 08 '13 at 18:09
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    Still, CoreData changed quite a lot, and added new concurrency scheme and much more. Nothing in the old tutorial tells you how to integrate reasonably with the new CoreData. – Motti Shneor Mar 20 '14 at 10:26
  • The link from Apple has long been marked as **retired** and has been removed since then. Apparently the referred outdated document is only available by [docplayer.net](https://docplayer.net/5046271-Nspersistentdocument-core-data-tutorial-for-mac-os-x-v10-4-retired-document.html). To me, the original question is still valid as it is very difficult to find documentation as I am trying to implement `NSPersistentDocument` today on OSX 10.13. – Lookaji Nov 08 '18 at 12:49

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