What is the difference between using state and binding in the context of development?

In the context of development, especially in iOS, state refers to data that describes the current condition of the interface or application. For example, a selected list item or entered text.

Binding is a mechanism that automatically links state data to interface elements, ensuring synchronization between them. When the state changes, the interface updates automatically.

For example: in SwiftUI, you have a state variable @State var isOn: Bool, and you bind it to a toggle. When the toggle is changed, the value of isOn changes, and vice versa.

Thus, state is data, and binding is a way to automatically synchronize it with the UI.