noboru-i

import 'package:flutter/material.dart';
import 'package:flutter_riverpod/flutter_riverpod.dart';

void main() {
  runApp(ProviderScope(child: const MyApp()));
}

class MyApp extends StatelessWidget {
  const MyApp({super.key});

noboru-i

void main() {
  print('main: before someFutureFunc');
  someFutureFunc();
  print('main: after someFutureFunc');
}

Future<void> someFutureFunc() async {
  print('someFutureFunc: before wait');
  await Future.delayed(const Duration(seconds: 3));
  print('someFutureFunc: after wait');

noboru-i

void main() {
  List<HitProduct> hitProducs = [];

  hitProducs.add(HitProduct("test"));
  hitProducs.add(HitProduct("test2"));

  final test = hitProducs.map((hitProduct) => OtherClass(hitProduct: hitProduct)).toList();
  
  print('test is $test');
}

noboru-i

import 'dart:async';

Future<void> main() async {
  final controller = StreamController<int>();
  
  startSender(controller);
  
  await for (int n in controller.stream) {
    print('consume $n');
  }

noboru-i

import 'dart:math';

void main() {
  final List<int> a  = [1, 2];
  final List<int> b  = [3, 4];
  
  List<int> newList1 = a;
  newList1 += b;
  print('newList1 $newList1'); // -> newList1 [1, 2, 3, 4]
  

noboru-i

typedef Id = String;

extension on Id {
  String get firstChar => substring(0, 1);
}

typedef IdList = List<Id>;

extension on IdList {
  String get firstItem => this[0];

noboru-i

void main() {
  _test1();
  _test2();
  _test3();
  _test4();
  
  // check `assert` works
  assert(false);
}

noboru-i

import 'dart:async';

void main() {
  final controller = StreamController<String>();
  
  _handle1(controller.stream);
//   _handle2(controller.stream);

  controller.sink.add('message 1');
  controller.sink.add('message 2');

noboru-i

import 'package:flutter/material.dart';

void main() => runApp(const MyApp());

class MyApp extends StatelessWidget {
  const MyApp({Key? key}) : super(key: key);

  static const String _title = 'Flutter Code Sample';

  @override

noboru-i

import 'package:flutter/material.dart';
import 'package:flutter_riverpod/flutter_riverpod.dart';

void main() {
  runApp(ProviderScope(child: MyApp()));
}

class MyApp extends StatelessWidget {
  @override
  Widget build(BuildContext context) {