List.await • dart: example to see the order of the returned results

await.dart

import 'dart:async';

Future main() async {
  print('start');

  final li = await Future.wait([fetch(4), fetch(6)]);
  print('results: ${li[0]} ${li[1]}'); // results: 4 2
  
  final li2 = await Future.wait([fetch(6), fetch(3)]);
  print('results 2: ${li2[0]} ${li2[1]}'); // results: 6 3
}

Future<int> fetch(int duration) {
  return Future.delayed(Duration(seconds: duration), () {
    return duration;
  });
}