ice-cream-observable.swift

import SwiftUI

struct ContentView: View {
    var viewModel = CoolViewModel()
    
    var body: some View {
        VStack {
            Menu {
                Picker("Ice Cream", selection: $viewModel.selectedIceCream) {
                    ForEach(viewModel.iceCreams) { iceCream in
                        Text(iceCream)
                            .tag(iceCream)
                    }
                }
            } label: {
                Text("Choose")
            }
        }
    }
}

@Observable
class CoolViewModel {
    var selectedIceCream = "chocolate"
    var iceCreams: [String] = ["chocolate", "vanilla", "strawberry"]
}