controller(_:didChangeContentWith:)
Notifies the receiver about changes to the content in the fetched results controller, by using a collection difference.
Declaration
optional func controller(_ controller: NSFetchedResultsController<any NSFetchRequestResult>, didChangeContentWith diff: CollectionDifference<NSManagedObjectID>)Discussion
This method is only invoked if the controller’s sectionNameKeyPath property is nil and controller(_:didChangeContentWith:) is not implemented.
If this method is implemented, no other delegate methods are invoked.