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Created July 7, 2020 15:13
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import 'package:flutter/material.dart';
import 'package:flutter/widgets.dart';
class CounterWidget extends StatelessWidget {
int _counter = 0; //The class is immutable so this instance field should be final.
Widget build(BuildContext context) {
return Scaffold(
body: Center(
child: Column(
children: [
onPressed: () {
_counter++; // Will not increment because there is no internal state.
child: Text('Press me'),
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