aya-eiya

import java.util.List;
import java.util.ArrayList;

public class Practice1 {
  static public void main(String[] args) {
    List<String> helloWorld = new ArrayList<String>(3);
    helloWorld.add("Hello");
    helloWorld.add(" ");
    helloWorld.add("World");
    helloWorld.add("!");

aya-eiya

import java.util.stream.Stream;

public class Practice1ASol {
  static public void main(String[] args) {
    Stream.of("Hello", " ", "World", "!").forEach(System.out::print);
  }
}

aya-eiya

package jp.sample

import io.vertx.scala.core.Vertx
import io.vertx.scala.ext.web._

object App {
  def main(args : Array[String]) {
    val vertx = Vertx.vertx()
    val router = Router.router(vertx)
    router.route().handler(context=>{

aya-eiya

void main() {
  final list1 = [
    const Fruits(id: 1, order: 2, name: '🍌'),
    const Fruits(id: 2, order: 1, name: '🍎'),
    const Fruits(id: 3, order: 3, name: '🍊'),
  ];
  list1..sort();
  print(list1);
}

aya-eiya

void main() {
  // 値を直接弄ってはいけない
  // const か Map.unmodifiable で保護する
  const firstMap = [
    {"id": 333, "name": "山田 太郎", "gender": "F", "birth_date": "19880205"},
    {"id": 111, "name": "山田 次郎", "gender": "F", "birth_date": "19880205"},
    {"id": 121, "name": "山田 花子", "gender": "F", "birth_date": "19880205"}
  ];
  const secondMap = [
    {

aya-eiya

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

/// Flutter code sample for [NavigationRail].

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

final GoRouter _router = GoRouter(
  routes: <RouteBase>[
    GoRoute(