How can I use return values from functions instead of using @Binding to pass data between views?

Using Swift
1

The explanation available at:

State | Apple Developer Documentation

Shows an example where a play/pause button is defined in the SwiftUI framework. The communication between the views is accomplished by the use of a @State variable, in the parent view, and a @Binding variable, in the child view.

struct PlayButton: View {
    @Binding var isPlaying: Bool

    var body: some View {
        Button(isPlaying ? "Pause" : "Play") {
            isPlaying.toggle()
        }
    }
}

Then you can define a player view that declares the state and creates a binding to the state using the dollar sign prefix:

struct PlayerView: View {
    var episode: Episode
    @State private var isPlaying: Bool = false

    var body: some View {
        VStack {
            Text(episode.title)
                .foregroundStyle(isPlaying ? .primary : .secondary)
            PlayButton(isPlaying: $isPlaying) // Pass a binding.
        }
    }
}

So, I have to how questions, if I may. How can I accomplish the same thing using a more functional approach:

  • without using @Binding, and

  • only relying on return values to pass information.

The second one is, how can I rewrite that example using Combine framework ?

I wonder whether the same could be done using solely functions or perhaps returning structs, or is there some alternative approach that is at least closer to my request.

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