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Implement first tutorial of startup names
This commit is contained in:
165
lib/main.dart
165
lib/main.dart
@ -1,109 +1,110 @@
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import 'package:flutter/material.dart';
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import 'package:flutter/material.dart';
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import 'package:english_words/english_words.dart';
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void main() => runApp(new MyApp());
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void main() => runApp(new MyApp());
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class MyApp extends StatelessWidget {
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class MyApp extends StatelessWidget {
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// This widget is the root of your application.
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@override
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@override
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Widget build(BuildContext context) {
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Widget build(BuildContext context) {
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return new MaterialApp(
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return new MaterialApp(
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title: 'Flutter Demo',
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title: 'Startup Name Generator', home: new RandomWords());
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theme: new ThemeData(
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// This is the theme of your application.
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//
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// Try running your application with "flutter run". You'll see the
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// application has a blue toolbar. Then, without quitting the app, try
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// changing the primarySwatch below to Colors.green and then invoke
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// "hot reload" (press "r" in the console where you ran "flutter run",
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// or press Run > Flutter Hot Reload in IntelliJ). Notice that the
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// counter didn't reset back to zero; the application is not restarted.
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primarySwatch: Colors.blue,
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),
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home: new MyHomePage(title: 'Flutter Demo Home Page'),
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);
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}
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}
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}
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}
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class MyHomePage extends StatefulWidget {
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class RandomWords extends StatefulWidget {
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MyHomePage({Key key, this.title}) : super(key: key);
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// This widget is the home page of your application. It is stateful, meaning
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// that it has a State object (defined below) that contains fields that affect
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// how it looks.
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// This class is the configuration for the state. It holds the values (in this
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// case the title) provided by the parent (in this case the App widget) and
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// used by the build method of the State. Fields in a Widget subclass are
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// always marked "final".
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final String title;
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@override
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@override
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_MyHomePageState createState() => new _MyHomePageState();
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createState() => new RandomWordsState();
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}
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}
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class _MyHomePageState extends State<MyHomePage> {
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class RandomWordsState extends State<RandomWords> {
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int _counter = 0;
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final _suggestions = <WordPair>[];
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final _saved = new Set<WordPair>();
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void _incrementCounter() {
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final _biggerFont = const TextStyle(fontSize: 18.0);
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setState(() {
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// This call to setState tells the Flutter framework that something has
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Widget _buildSuggestions() {
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// changed in this State, which causes it to rerun the build method below
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return new ListView.builder(
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// so that the display can reflect the updated values. If we changed
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padding: const EdgeInsets.all(16.0),
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// _counter without calling setState(), then the build method would not be
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itemBuilder: (context, i) {
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// called again, and so nothing would appear to happen.
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if (i.isOdd) return new Divider();
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_counter++;
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final index = i ~/ 2;
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});
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if (index >= _suggestions.length) {
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_suggestions.addAll(generateWordPairs().take(10));
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}
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return _buildRow(_suggestions[index]);
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},
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);
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}
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Widget _buildRow(WordPair pair) {
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final alreadySaved = _saved.contains(pair);
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return new ListTile(
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title: new Text(
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pair.asPascalCase,
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style: _biggerFont,
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),
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trailing: new Icon(
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alreadySaved ? Icons.favorite : Icons.favorite_border,
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color: alreadySaved ? Colors.red : null,
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),
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onTap: () {
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setState(() {
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if (alreadySaved) {
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_saved.remove(pair);
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} else {
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_saved.add(pair);
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}
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});
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},
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);
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}
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}
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@override
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@override
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Widget build(BuildContext context) {
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Widget build(BuildContext context) {
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// This method is rerun every time setState is called, for instance as done
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// by the _incrementCounter method above.
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//
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// The Flutter framework has been optimized to make rerunning build methods
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// fast, so that you can just rebuild anything that needs updating rather
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// than having to individually change instances of widgets.
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return new Scaffold(
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return new Scaffold(
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appBar: new AppBar(
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appBar: new AppBar(
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// Here we take the value from the MyHomePage object that was created by
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title: new Text('Startup Name Generator'),
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// the App.build method, and use it to set our appbar title.
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actions: <Widget>[
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title: new Text(widget.title),
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new IconButton(
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icon: new Icon(Icons.list),
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onPressed: _pushSaved,
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),
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],
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),
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),
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body: new Center(
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body: _buildSuggestions(),
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// Center is a layout widget. It takes a single child and positions it
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);
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// in the middle of the parent.
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}
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child: new Column(
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// Column is also layout widget. It takes a list of children and
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void _pushSaved() {
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// arranges them vertically. By default, it sizes itself to fit its
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Navigator.of(context).push(
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// children horizontally, and tries to be as tall as its parent.
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new MaterialPageRoute(
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//
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builder: (context) {
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// Invoke "debug paint" (press "p" in the console where you ran
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final tiles = _saved.map(
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// "flutter run", or select "Toggle Debug Paint" from the Flutter tool
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(pair) {
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// window in IntelliJ) to see the wireframe for each widget.
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return new ListTile(
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//
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title: new Text(
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// Column has various properties to control how it sizes itself and
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pair.asPascalCase,
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// how it positions its children. Here we use mainAxisAlignment to
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style: _biggerFont,
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// center the children vertically; the main axis here is the vertical
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),
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// axis because Columns are vertical (the cross axis would be
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);
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// horizontal).
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},
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mainAxisAlignment: MainAxisAlignment.center,
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);
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children: <Widget>[
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final divided = ListTile
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new Text(
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.divideTiles(
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'You have pushed the button this many times:',
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context: context,
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tiles: tiles,
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)
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.toList();
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return new Scaffold(
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appBar: new AppBar(
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title: new Text('Saved Suggestions'),
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),
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),
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new Text(
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body: new ListView(children: divided),
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'$_counter',
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);
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style: Theme.of(context).textTheme.display1,
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},
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),
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],
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),
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),
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),
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floatingActionButton: new FloatingActionButton(
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onPressed: _incrementCounter,
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tooltip: 'Increment',
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child: new Icon(Icons.add),
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), // This trailing comma makes auto-formatting nicer for build methods.
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);
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);
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}
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}
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}
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}
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@ -85,6 +85,13 @@ packages:
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url: "https://pub.dartlang.org"
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url: "https://pub.dartlang.org"
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source: hosted
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source: hosted
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version: "0.1.2"
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version: "0.1.2"
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english_words:
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dependency: "direct main"
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description:
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name: english_words
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url: "https://pub.dartlang.org"
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source: hosted
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version: "3.1.0"
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flutter:
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flutter:
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dependency: "direct main"
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dependency: "direct main"
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description: flutter
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description: flutter
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@ -8,6 +8,8 @@ dependencies:
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# The following adds the Cupertino Icons font to your application.
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# The following adds the Cupertino Icons font to your application.
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# Use with the CupertinoIcons class for iOS style icons.
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# Use with the CupertinoIcons class for iOS style icons.
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cupertino_icons: ^0.1.0
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cupertino_icons: ^0.1.0
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english_words: ^3.1.0
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dev_dependencies:
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dev_dependencies:
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flutter_test:
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flutter_test:
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