how to handle state in swiftui across files

To handle state in SwiftUI across files, you can utilize several state management tools provided by SwiftUI, such as @State, @Binding, and @ObservedObject. Here's a brief overview of how these can be used:

1. @State: This is used to create a new internal source of data for a view. SwiftUI manages the storage and provides it back for the view to read and write. It's suitable for simple state management within a single view.

2. @Binding: This creates a two-way reference to the state of another view. It allows you to pass state between views, enabling a child view to read and write the state of a parent view.

3. @ObservedObject: This is used for more complex state management where you need to share state across multiple views. You define a class that conforms to the ObservableObject protocol and use @Published properties within it. Views that need to observe changes to this state use @ObservedObject.

In the SwiftUI essentials session, it is explained how SwiftUI manages state and updates views when state changes. The session also covers how to use @State and @Binding to manage state within and across views.

For more detailed information, you can refer to the SwiftUI essentials session, which discusses the fundamentals of views and state management in SwiftUI.