yeoupooh

void main() {
  final regex = RegExp(r'^[!-~]+$');  // Raw string for the regex

  List<String> validStrings = [
    r'Hello123!',       // Raw string
    r'@Flutter_Dart#',  // Raw string
    r'ABCdef123&*()',   // Raw string
    r'1234567890',      // Raw string
    r'!@#$%^&*()',      // Raw string
    r'~`<>?/|\',        // Raw string

yeoupooh

// Copyright (c) 2019, the Dart project authors.  Please see the AUTHORS file
// for details. All rights reserved. Use of this source code is governed by a
// BSD-style license that can be found in the LICENSE file.

import 'package:flutter/material.dart';

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

class MyApp extends StatelessWidget {
  @override

yeoupooh

import 'package:flutter/material.dart';

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

class MyApp extends StatelessWidget {
  @override
  Widget build(BuildContext context) {
    return MaterialApp(
      title: 'Flutter Demo',
      debugShowCheckedModeBanner: false,

yeoupooh

@echo off
@setlocal

@REM Uncomment to debug
@REM SET _EXEC=echo

@REM Check permission
net session >nul 2>&1
if %errorLevel% neq 0 (
    echo ERROR: This script should be run by Administrators.

yeoupooh

import 'package:flutter/material.dart';

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

class MyApp extends StatelessWidget {
  @override
  Widget build(BuildContext context) {
    final appTitle = 'Flutter Form Demo';
    return MaterialApp(
      title: appTitle,

yeoupooh

//
// ListView example
// Created by Thomas Min
//
import 'package:flutter/material.dart';

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

class MyApp extends StatelessWidget {
  @override

yeoupooh

//
// Card widget sample
// https://material.io/components/cards/flutter#theming-a-card
//
import 'package:flutter/material.dart';

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

class MyApp extends StatelessWidget {
  @override

yeoupooh

@startuml

autonumber

A -> B: step

activate B
B -> C: step

activate C

yeoupooh

# PlantUML Editor

yeoupooh

void main() {
  var matcher = new RegExp('src="([^"]*)"');
  var g = matcher.allMatches('abc class="videoclass" src="source" test>');
  print(g.length);
  g.forEach((m) {
    print('0=${m[0]}, 1=${m[1]}');
  });
}