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import 'dart:math';
import 'package:flutter/material.dart';
import 'package:flutter/rendering.dart';

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

class App extends StatelessWidget {
  static const title = 'Flutter longpress';
  @override
  Widget build(BuildContext context) => MaterialApp(

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import 'package:flutter/material.dart';

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

class App extends StatelessWidget {
  static const title = 'Flutter App';
  @override
  Widget build(BuildContext context) => MaterialApp(
        title: title,
        theme: ThemeData(

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import 'dart:math';

import 'package:flutter/material.dart';

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

class App extends StatelessWidget {
  static const title = 'Flutter App';
  @override
  Widget build(BuildContext context) => MaterialApp(

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import 'dart:async';
import 'package:flutter/material.dart';
import 'package:flutter/rendering.dart';
import 'package:flutter/gestures.dart';

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

class App extends StatelessWidget {
  static const title = 'Flutter Tooltip + ReorderableListView';
  @override

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typedef MessageBoxNative = Int32 Function(
  IntPtr hWnd, 
  Pointer<Utf16> lpText, 
  Pointer<Utf16> lpCaption,
  Int32 uType
);

typedef MessageBoxDart = int Function(
  int hWnd, 
  Pointer<Utf16> lpText, 

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class ColorListScreen extends StatelessWidget {
 final List<Color> colors;
 final void Function(Color color) onTapped;
 ColorListScreen({this.colors, this.onTapped});
 
 @override
 Widget build(BuildContext context) => Scaffold(
       appBar: AppBar(title: Text('Colors')),
       body: Column(
         children: [

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class _ColorAppState extends State<ColorApp> {
 List<Color> _colors = [Colors.red, Colors.green, Colors.blue];
 
 @override
 Widget build(BuildContext context) => MaterialApp(
       title: 'Color App',
       home: Builder(
         builder: (context) => ColorListScreen(
           colors: _colors,
           // the Navigator manages the list of pages itself; you can only push and pop

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class _ColorAppState extends State<ColorApp> {
 Color _selectedColor;
 List<Color> _colors = [Colors.red, Colors.green, Colors.blue];
 
 @override
 Widget build(BuildContext context) => MaterialApp(
       title: 'Color App',
       home: Navigator(
           // you can see and decide on every page in this list

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class CounterState extends State<RestorableCounter> with RestorationMixin {
  @override
  String get restorationId => widget.restorationId;

  RestorableInt _counter = RestorableInt(0);

  @override
  void restoreState(RestorationBucket oldBucket) => registerForRestoration(_counter, 'count');

  void _incrementCounter() => setState(() => _counter.value++);

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void main() {
  GestureBinding.instance.resamplingEnabled = true;
  run(MyApp());
}