Noboru ISHIKURA noboru-i

🏠

Always working from home

noboru-i / main.dart

Created December 17, 2024 03:14

Show Ripple Effect by code

	import 'package:flutter/material.dart';

	void main() {
	runApp(const MyApp());
	}

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

	@override

noboru-i / main.dart

Created March 9, 2024 05:48

My understanding of ProviderScope was wrong.

	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 / main.dart

Last active August 30, 2023 03:49

Call async function from non-async function

	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 / main.dart

Created August 18, 2023 04:14

mellow-spray-5912

	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 / main.dart

Last active May 19, 2023 03:37

bustling-marble-3699

	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 / main.dart

Last active May 19, 2023 00:51

Listの結合について確認

	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 / main.dart

Last active February 11, 2023 04:50

Dart: typedef and extension

	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 / main.dart

Last active September 8, 2022 03:32

Check term

noboru-i / main.dart

Last active September 7, 2022 07:48

Check `await for` + stream works

	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 / main.dart

Last active May 26, 2022 01:35

Flutter CircularProgressIndicator

	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