madmag77

use std::fs::File;
fn main() {
   let f = File::open("main.jpg");   // main.jpg doesn't exist
   match f {
      Ok(f)=> {
         println!("file found {:?}",f);
      },
      Err(e)=> {
         println!("file not found \n{:?}",e);   //handled error
      }

madmag77

func Sqrt(f float64) (float64, error) {
    if f < 0 {
        return 0, errors.New("math: square root of negative number")
    }
    // implementation
}

f, err := Sqrt(-1)
if err != nil {
    fmt.Println(err)

madmag77

try {
  final remaingAmount = await getRemainingAmount(account: account);
  displayAccountAmount(remaingAmount);
} on SocketException catch (_) {
  displayNoConnectionError();
} catch (e, s) {
  logException(exception: e, stackTrace: s);
  rethrow;
}

madmag77

Future<Money> getRemainingAmount({Account account}) async {
  final response = await backend.getAcccountInfo(account);
  return response.remainingAmount;
}

madmag77

void main() {
  WidgetsFlutterBinding.ensureInitialized();

  FlutterError.onError = (FlutterErrorDetails errorDetails) {
    print("onError Exception: $errorDetails was caught by Flutter framework - redirect to Sentry or Firebase.");
  };

  runZonedGuarded(() {
    createProviders();
    runApp(MyApp());

madmag77

import 'dart:async';

void main(List<String> arguments) async {
  Stream<int> stream;

  runZonedGuarded(() {
    stream = getStream();
  }, (e, s) {
    print('PRODUCER ZONE Exception handled: $e, $s');
  });

madmag77

import 'dart:async';

void main(List<String> arguments) async {
    startListener(getStream());
}

Stream<int> getStream() {
  final intsController = StreamController<int>.broadcast();
  int i = 42;
  Timer.periodic(Duration(seconds: 1), (timer) {

madmag77

  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(
          () {

madmag77

runZonedGuarded((){
    Timer.run(() {
      print('Timer runs.');
      throw Exception('[Timer] Bad thing happens!');
    });
    print('Everything is fine!');
  }, (e,s) {
    print('Exception handled $e, \n$s');
  });

madmag77

try {
    Timer.run(() {
      print('Timer runs.');
      throw Exception('[Timer] Bad thing happens!');
    });
    print('Everything is fine!');
  } on IntegerDivisionByZeroException {
    print('Cant divide to zero');
  } finally {
    print('Clean-up done');