ContentView.swift

import SwiftUI

struct User: Identifiable {
    var id: Int
    var firstName: String
    var lastName: String
}

struct UserRow: View {
    var user: User
    
    var body: some View {
        VStack(alignment: .leading) {
            Text(user.firstName)
                .font(.largeTitle)
            Text(user.lastName)
        }
    }
}

struct DetailView: View {
    var selectedUser: User
    
    var body: some View {
        Text(selectedUser.lastName)
            .font(.largeTitle)
            .foregroundColor(.red)
    }
}

struct ContentView : View {
    var body: some View {
        let user1 = User(id: 1, firstName: "Piper", lastName: "Chapman Yay")
        let user2 = User(id: 2, firstName: "Gloria", lastName: "Mendoza")
        let users = [user1, user2]
        
        return NavigationView {
            List(users) { user in
                NavigationButton(destination: DetailView(selectedUser: user)) {
                    UserRow(user: user)
                }
            }
        }
    }
}