mdecourse

import "dart:math" as math;

class Point {
  /*
  Declare a constructor by creating a function with the same name as its class (plus, optionally, an additional identifier as described in Named constructors)
  */
  num x, y;
  // Constructor
  //Point(num x, num y) {
    // The "this" keyword refers to the current instance.

mdecourse

// 導入 dart:html
// 注意每一段可執行的程式敘述句最後要有 ; 
import 'dart:html';
// 每一個 dart 程式都從 main() 主函式開始執行, void 表示此函式沒有傳回值, void 在此可以省略
void main() {
// 超過一行的程式區段, 以大括號區隔
// querySelector 函式屬於 dart:html 中的一員, 專門用來取 html 中的特定 Element
// 當 id 為 button 的 Element 被按下後 (onClick 為 Element 的 properties 之一), 會傳回 stream, 交給 listen 方法, 用來啟動 sayHello 函式
 querySelector("#button").onClick.listen(sayHello);
}

mdecourse

import 'package:flutter_web/material.dart';
import 'package:flutter_web_ui/ui.dart' as ui;

class MyApp extends StatelessWidget {
  @override
  Widget build(BuildContext context) {
    return MaterialApp(
      title: 'Hi Kmol',
      home: Scaffold(
        appBar: AppBar(

mdecourse

import 'package:flutter_web/material.dart';
import 'package:flutter_web_ui/ui.dart' as ui;

Future<void> main() async {
  await ui.webOnlyInitializePlatform();

  runApp(MyApp());
}

class MyApp extends StatelessWidget {

mdecourse

// Copyright 2014 David Kopec
// Created for Dart for Absolute Beginners, an Apress title
// This source code is released under the terms outlined in license.txt in the
// source code respository's root directory.

import 'dart:html';

bool imperial = true;
const int IMPERIAL_MULTIPLIER = 703;

mdecourse

import "dart:math" as math;

class Point {
  // x, y are both final, can not be set to new coordinate
  final num x, y;
  Point(this.x, this.y);
  Point.origin()
      : x = 0,
        y = 0;
  num distanceTo(Point other) {

mdecourse

<canvas id="dart_canvas_example" height='500' width='500'>
Your browser does not support Canvas
</canvas>

mdecourse

// 導入 dart 的核心數學程式庫, 並設其名稱為 math
import "dart:math" as math;

// 定義一個類別, 名稱為 Point
class Point{
  // 定應兩個案例變數 x 與 y 資料型別為 num, 表示可以是整數或幅點數
  num x;
  num y;
  
  // 定義一個與類別名稱相同的建構子 (建立案例時, 會自動執行此一建構子方法內容), 具有兩個輸入變數

mdecourse

import 'dart:convert';

main() {
  var stud_no;
  var lists = json.decode('''
  [[40523120, 40723102, 40723110, 40723112, 40723115, 40723120, 40723127, 40723136, 40723140, 40723143, 40723146, 40723148], [40523148, 40523241, 40723118, 40723129, 40723132, 40723135, 40723138, 40723139, 40723141, 40723144, 40723145, 40723153], [40523142, 40723104, 40723106, 40723108, 40723111, 40723121, 40723123, 40723126, 40723128, 40723130, 40723133], [40423218, 40623123, 40623143, 40723134, 40723137, 40723142, 40723147, 40723149, 40723150, 40723151, 40723154], [40523113, 40723101, 40723103, 40723107, 40723114, 40723119, 40723122, 40723124, 40723125, 40723152, 40723155]]''');
  for (int i = 0; i < lists.length; i++) {
    print('=' * 20 + "<br />");
    print("第 ${i + 1} 組成員:" + "<br />");
    for (int j = 0; j < lists[i].length; j++) {

mdecourse

import pkg_resources
from subprocess import call

packages = [dist.project_name for dist in pkg_resources.working_set]
print(packages)
print()
call("python -m pip install --upgrade " + ' '.join(packages), shell=True)