Core Data tutorial part 4.2 / 5 - Using NSFetchedResultsController, Reorder TableViewCells with LongPressGesture

In this Core Data Tutorial, we do very important and useful things: First we set NSFetchedResultsController, and do changes in the code, create displayOrder attribute.With LongPressGestureRecognizer we can reorder TableViewCells and update Core Data cells with displayOrder attribute, which saved immediately in Core Data.

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CoreData Tutorial Part 5/5 - Model Versioning, Lightweight Migration, Model Mapping

When you need to change your Core Data Entities or structure, you have to add new model version before you send your App in AppStore. If you change just attributes or fetched templates, it’s not needed, you can do it without consequence. But if you want to add a new Entity, you have to migrate your persistent store to a new model version. You should also set mappings for the migration. In this tutorial, we add model versions, model mappings, and using Lightweight Migration.

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