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import 'dart:async';

import 'package:state_notifier/state_notifier.dart';
import 'package:data_state/data_state.dart';

class _FunctionalStateNotifier<T> extends DataStateNotifier<T> {
  final DataStateNotifier<T> _source;
  _FunctionalStateNotifier(this._source) : super(null);
  RemoveListener _disposeFn;

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void main() async {
  // ...
  runApp(MultiProvider(
    providers: [
      Provider<Api>(create: (_) => Api()),
      FutureProvider<UserService>(
        create: (context) async {
          var service = UserService(Provider.of(context, listen: false));
          await service.init();
          return service;

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import 'package:flutter/material.dart';

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

extension ColorExtension on String {
  toColor() {
    var hexColor = this.replaceAll("#", "");
    if (hexColor.length == 6) {
      hexColor = "FF" + hexColor;
    }

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import 'package:flutter/material.dart';

main() {
  runApp(MyApp());
}

class MyApp extends StatelessWidget {
  @override
  Widget build(context) {
    return StreamBuilder<void>(

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import 'package:flutter/material.dart';

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

class MyApp extends StatelessWidget {
  // This widget is the root of your application.
  @override
  Widget build(BuildContext context) {
    return MaterialApp(
      title: 'Flutter Demo',

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import 'package:flutter/cupertino.dart';

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

class MyApp extends StatelessWidget {
  @override
  Widget build(context) {
    return CupertinoApp(
      home: CupertinoPageScaffold(
        child: Center(

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import 'package:flutter/material.dart';

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

class MyApp extends StatelessWidget {
  @override
  Widget build(context) {
    return MaterialApp(
      home: Scaffold(
        body: Center(

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typedef Comparison<T> = int Function(T, T);

main() {
  Comparison<String> crazy = (String a, String b) {
    return ([-1, 0, 1]..shuffle()).first;
  };

  final animals = ['fox', 'cow', 'horse'];
  animals.sort(crazy);
  print(animals);

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import 'package:flutter/widgets.dart';

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

class MyApp extends StatelessWidget {
  @override
  Widget build(context) => Center(
    child: Text(Animal().move(), textDirection: TextDirection.ltr)
  );
}

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import 'package:flutter/widgets.dart';

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

class MyApp extends StatelessWidget {
  @override
  Widget build(context) => Center(
    child: Text('Hello Flutter!', textDirection: TextDirection.ltr)
  );
}