riscait

import 'package:flutter/material.dart';

import 'util/theme/theme_list_view.dart';

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

  @override
  Widget build(BuildContext context) {
    return Scaffold(

riscait

{
    "version": "0.2.0",
    "configurations": [
        {
            "name": "Flutter Debug-Development",
            "request": "launch",
            "type": "dart",
            "program": "lib/main_development.dart",
            "args": [
                "--debug",

riscait

#import <UIKit/UIKit.h>

NS_ASSUME_NONNULL_BEGIN

@interface UIColor (Ext)

// Original Colors
+ (UIColor *) primary;

// Compatible System Colors for iOS 12 and below

riscait

import 'package:flutter/material.dart';

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

class MyApp extends StatelessWidget {
  @override
  Widget build(BuildContext context) {
    return MaterialApp(
      debugShowCheckedModeBanner: false,
      home: Scaffold(

riscait

void main() {
  final items = ['a', 'b', 'c', 'd', 'e', 'f', 'g', 'h', 'i', 'j', 'k'];
  final chunkedItems = [];
  final chunkSize = 3;
  var count = 0;

  do {
    chunkedItems.add(items.skip(count).take(chunkSize).toList());
    count += chunkSize;
  } while (count < items.length);

riscait

void main() {
  final items = ['a', 'b', 'c', 'd', 'e', 'f', 'g', 'h', 'i', 'j', 'k'];
  final chunkedItems = [];
  final chunkSize = 3;

  for (var i = 0; i < items.length; i += chunkSize) {
    final isLast = i + chunkSize >= items.length;
    final end = isLast ? items.length : i + chunkSize;
    chunkedItems.add(items.sublist(i, end));
  }

riscait

enum Sport {
  baseball,
  football,
  tennis,
  swimming,
}

void main() {
  final list = [Sport.baseball,Sport.football, Sport.tennis];
  final hasTennis = list.contains(Sport.tennis);

riscait

/// Factory Constructorを使ったシングルトンクラスの定義方法
class FactorySinglton {
  /// 初めてインスタンス化するときにfactoryコンストラクタから使用する、Privateなコンストラクタ
  FactorySinglton._() {
    print('FactorySingleton Constructed');
  }

  /// シングルトンを実現するインスタンスを提供
  factory FactorySinglton.instance() => _instance;

riscait

class Cat {
  const Cat(this.name);
  final String name;
}

void f<T>(T arg) {
  if (arg is String) {
    print('This is String!');
  }

riscait

import 'package:flutter/material.dart';

enum AppForm {
  first,
  second,
  third,
}

extension AppFormExt on AppForm {