daiki1003

class BadAssociationWidget extends StatelessWidget {
  const BadAssociationWidget();
  
  @override
  Widget build(BuildContext context) {
    return Container(
      margin: const EdgeInsets.symmetric(horizontal: 16),
      child: Text('Hello with Margin'),
    ); 
  }

daiki1003

class AwesomeWidget extends StatelessWidget {
  const AwesomeWidget({
    super.key,
  });
  
  @override
  Widget build(BuildContext, context) {
    void showUserScreen() {
      // show user screen
    }

daiki1003

class Awesome {
  const Awesome.positional(this.value);

  const Awesome.named({required this.value});

  final int value;
}

/// Instanciation
final positional = Awesome.positional(1);

daiki1003

class SomeWidget extends ConsumerWidget {
  const SomeWidget({
    super.key,
  });
  
  @override
  Widget build(BuildContext context, WidgetRef ref) {
    final musicId = ref.watch(musicIdProvider);
    final volume = ref.watch(volumeProvider);
    

daiki1003

class SomeWidget extends ConsumerWidget {
  const SomeWidget({
    super.key,
  });
  
  Future<void> _playMusic({
    required BuildContext context,
    required WidgetRef ref,
    required int musicId,
    required int volume,

daiki1003

class MyGreatestWidget extends StatelessWidget {
  const MyGreatestWidget({
    Key? key,
    required this.onPressed,
  }) : super(key: key);

  final ValueCallback<String> onPressed;

  @override
  Widget build(BuildContext context) {

daiki1003

class SomeBuilder extends StatelessWidget {
  @override
  Widget build(BuildContext context) {
    return Builder(
      builder: (innerContext) {
        return NewIconButton();
      },
    );
  }
}

daiki1003

class SomeBuilder extends StatelessWidget {
  @override
  Widget build(BuildContext context) {
    return Builder(
      builder: (innerContext) {
        return IconButton(
          onPressed: () {
            final theme = Theme.of(context);
            ...,
          }

daiki1003

class SomeBigWidgetState extends State<SomeBigWidget> {
  @override
  Widget build(BuildContext context) {
    return Stack(
      children: [
        _buildSomeWidget1(),
        _buildSomeWidget2(),
        _buildSomeWidget3(),
        _buildLikeButton(),
      ],

daiki1003

// some_screen.dart
class SomeScreen extends StatelessWidget {
  static GoRoute route({
    List<GoRoute> routes = const <GoRoute>[],
  }) {
    return GoRoute(
      path: routeName,
      name: routeName,
      builder: (_, __) => const SomeScreen(),
      routes: routes,