// entire usable func for fetching data func loadData() { if let context = (UIApplication.shared.delegate as? AppDelegate)?.persistentContainer.viewContext { if let hellos = try? context.fetch(Hello.fetchRequest()) as? [Hello] { } } }
override func viewWillAppear(_ animated: Bool) { if let context = (UIApplication.shared.delegate as? AppDelegate)?.persistentContainer.viewContext { if let coreDataToDoItems = try? context.fetch(ToDoItem.fetchRequest()) as? [ToDoItem] { toDo = coreDataToDoItems } } }