Add an icon to the “Everyone” screen showing whether a prospect was contacted or not.
Add an editing screen, so users can adjust the name and email address of someone they scanned previously. (Tip: Use the simple form of NavigationLink rather than navigationDestination(), to avoid your list selection code confusing the navigation link.)
Allow users to customize the way contacts are sorted – by name or by most recent.
initializer를 이용해서 변경된 sortdescriptor를 사용해보았으나, 의도대로 되지 않는다. list view를 분리하지 않고도 하는 방법을 알고 싶다.