hmlongco

class EnumeratedStateViewModel {

    public let state: Observable<State>

    enum State: Equatable {
        case initial
        case loading
        case loaded(UIImage)
        case empty(String)
        case error(String)

hmlongco

class StructStateViewModel {

    public let state: Observable<State>

    struct State {
        var id: String?
        var loading = false
        var image: UIImage?
        var empty: String?
        var error: String?

hmlongco

class MVVMViewController: UIViewController {

    @IBOutlet weak var firstNameLabel: UILabel!
    @IBOutlet weak var lastNameLabel: UILabel!
    @IBOutlet weak var addressLabel: UILabel!
    @IBOutlet weak var cityLabel: UILabel!
    @IBOutlet weak var stateLabel: UILabel!
    @IBOutlet weak var zipLabel: UILabel!

    private var viewModel = MyViewModel()

hmlongco

class RxSwiftViewController: UIViewController {

    @IBOutlet weak var firstNameLabel: UILabel!
    @IBOutlet weak var lastNameLabel: UILabel!
    @IBOutlet weak var addressLabel: UILabel!
    @IBOutlet weak var cityLabel: UILabel!
    @IBOutlet weak var stateLabel: UILabel!
    @IBOutlet weak var zipLabel: UILabel!

    private var viewModel = MyViewModel()

hmlongco

import 'package:flutter/material.dart';
import 'package:test_app/models/commodities_model.dart';

class CommodityPicker extends StatelessWidget {

  CommodityPicker(this.commodityMap, this.selected);
  final Map<String, Commodity> commodityMap; // VM
  final String selected; // VM
  @override
  Widget build(BuildContext context) {

hmlongco

  
   func load() {
        DispatchQueue.global(qos: .utility).async {
            let result = self.makeAPICall()
            DispatchQueue.main.async {
                switch result {
                case let .success(data):
                    print(data)
                case let .failure(error):
                    print(error)

hmlongco

    func simulateAnotherCall(_ param: String?) -> Result<String?, NWError> {
        return makeAPICall()
    }

    func load() {
        DispatchQueue.global(qos: .utility).async {
            // make first api call and flatMap second and third api calls
            let result = self.apiTest()
                .flatMap { self.simulateAnotherCall($0) }
                .flatMap { self.simulateAnotherCall($0) }

hmlongco

struct BasicNavigationView : View {
    let users: [User] = User.users
    var body: some View {
        NavigationView {
            List(users) { user in
                NavigationButton(destination: BasicNavigationDetailView(user: user)) {
                    Text(user.name)
                }
            }
            .navigationBarTitle(Text("Users"))

hmlongco

struct A11yModifier: ViewModifier {
    ///A label that is visible to UI tests AND VoiceOver
    let label: String?
    ///An identifier that is visible to UI tests NOT VoicOver
    let identifier: String?
    ///The required function that returns our View with the necessary accessibility modifiers
    func body(content: Content) -> some View {
        content
            .conditionalModifier(label != nil) {
                $0.accessibility(label: Text(label!))

hmlongco

struct MainMenuView: View {

    @EnvironmentObject var menu: MenuService

    var body: some View {
        NavigationView {
            List {
                if menu.sections.isEmpty {
                    Text("Loading...")
                        .foregroundColor(.gray)