This app is a rework of the default CoreData project in Xcode 12. Instead of using @FetchResult and tightly coupling the database to the view, CoreData is facaded behind a PeristenceServiceProtocol, allowing:
- Removal of business logic from the view, by placing it in the view model instead
- Decoupling the database service from the rest of the app
- Mocking of previews
- Testability
