How does the SwiftUI state management work

SwiftUI state management is a key feature that allows you to create dynamic and responsive user interfaces. In SwiftUI, views are state-driven, meaning that when your view's state changes, SwiftUI automatically updates the UI to reflect those changes. This eliminates the need for boilerplate code and reduces the likelihood of update bugs.

Here's a brief overview of how state management works in SwiftUI:

State: You can use the @State property wrapper to create an internal source of data for a view. SwiftUI manages the storage of this state and provides it back for the view to read and write. For example, if you have a view that allows users to rate something, you can use @State to keep track of the current rating and update it as needed.
Binding: A @Binding creates a two-way reference to the state of another view. This is useful when you want to share state between views. For instance, if you have a container view that includes a rating view and a gauge, you can use a binding to ensure that both views are synchronized with the same state.
Observable Objects: SwiftUI can track dependencies on specific properties used in view bodies. By creating an observable object, you can manage more complex state changes and ensure that views update when the underlying data changes.
Animations: SwiftUI builds on its data-driven updates to support animations. By wrapping state changes with animations, you can apply transitions and effects to your views seamlessly.

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