[Dart article] Guarded zones 2

dart_zones2.dart

  print('Current zone start in: ${Zone.current.toString()}');
  runZonedGuarded(() {
    print(
        'Current zone inside runZoned: ${Zone.current.toString()} with name ${Zone.current['ZoneName']}');
    Timer.run(() {
      print('Timer runs.');
      throw Exception('[Timer] Bad thing happens!');
    });
    runZonedGuarded(
          () {
        print(
            'Current zone (1) inside runZoned: ${Zone.current.toString()} with name ${Zone.current['ZoneName']}');
        Timer.run(() {
          print('Timer 1 runs. ');
          throw Exception('[Timer 1] Bad thing happens!');
        });
      },
          (e, s) {
        print(
            'Current zone (1) inside catch: ${Zone.current.toString()} with name ${Zone.current['ZoneName']}');
        print('Exception handled (1) $e, \n$s');
      },
      zoneValues: {'ZoneName': 'Second zone'},
    );
    print('Everything is fine!');
  }, (e, s) {
    print(
        'Current zone inside catch: ${Zone.current.toString()} with name ${Zone.current['ZoneName']}');
    print('Exception handled $e, \n$s');
  }, zoneValues: {'ZoneName': 'First zone'});