daiki1003

class ScrollViewUnderContainer extends StatelessWidget {
  @override
  Widget build(BuildContext context) {
    return Scaffold(
      body: Column(
        children: [
          Expanded(
            child: ListView(
              children: [
                for (int i = 0; i < 100; i++)

daiki1003

class Tweet {
  final String id;
  final String content;
}

// Three response classes includes tweets.
class FeedResponse {
  final List<Tweet> tweets;
}

daiki1003

bool nullableBoolean() {
  return null;
}

void main() {
  final nullable = nullableBoolean();
  if (nullable == false) {
    print('aa');
  } else {
    print('bb');

daiki1003

final authStateProvider = StateProvider<bool>(
  (ref) => false,
);

final notificationsStateProvider = StateProvider<List<Notification>?>(
  (ref) {
    final authorized = ref.watch(authStateProvider).state;
    if (authorized) {
      // return ?
    }

daiki1003

class SampleScreen extends StatefulWidget {
  const SampleScreen({
    Key? key,
  }) : super(key: key);

  @override
  _SampleScreenState createState() => _SampleScreenState();
}

class _SampleScreenState extends State<SampleScreen> {

daiki1003

- name: 'Setup flutter environment'
  uses: subosito/flutter-action@v2
  with:
    flutter-version: '2.10.3'
    channel: 'stable'
    cache: true # これ

daiki1003

- name: Cache pubspec dependencies
  uses: actions/cache@v2
  with:
    path: |
      ${{ env.FLUTTER_HOME }}/.pub-cache
      **/.packages
      **/.flutter-plugins
      **/.flutter-plugin-dependencies
      **/.dart_tool/package_config.json
    key: build-pubspec-${{ hashFiles('**/pubspec.lock') }}

daiki1003

- name: Cache build runner
  uses: actions/cache@v2
  with:
    path: |
      **/.dart_tool/build
    key: build-runner-${{ hashFiles('**/asset_graph.json') }}-${{ hashFiles('**/pubspec.lock') }}
    restore-keys: |
      build-runner-

daiki1003

 - name: 'Setup flutter environment'
   uses: subosito/flutter-action@v2
   with:
     flutter-version: '2.10.3'
     channel: 'stable'
     cache: true

 - name: 'Cache pubspec dependencies'
   uses: actions/cache@v2
   with:

daiki1003

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

  final ValueCallback<String> onPressed;

  @override
  Widget build(BuildContext context) {