Scrumdinger 를 만들면서 나온 설명들을 정리 https://developer.apple.com/tutorials/app-dev-training/making-classes-observable Making classes observable | Apple Developer DocumentationYou’ve used the and property wrappers to define a value type as a source of truth for triggering updates in your view hierarchy. In this article, you’ll learn how to define a reference type as a source of truth for your app’s user..
