event loop process demonstration

event_loop_demo.dart

import 'package:flutter/material.dart';

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

class MyApp extends StatelessWidget {
  @override
  Widget build(BuildContext context) {
    return MaterialApp(
        home: Scaffold(
      body: RaisedButton(
          onPressed: () {
            print("first event is processed by the event loop!");
            Future.delayed(Duration(seconds: 3), () => "completed Future value")
                .then((value) {
              print("second event is processed by the event loop!");
              print('Future completed with a value : $value');
            });
          },
          child: Text("click me!")),
    ));
  }
}