Pass by reference in dart

//Dart doesn't support pass by reference. You could try wrapping it in a class

class PrimitiveWrapper {
  var value;
  PrimitiveWrapper(this.value);
}

void alter(PrimitiveWrapper data) {
  data.value++;
}

main() {
  var data = new PrimitiveWrapper(5);
  print(data.value); // 5
  alter(data);
  print(data.value); // 6
}

Source: stackoverflow.com

Similar codes

0 vote276 views1 answer
Flutter iterate over list widget
Dart
2 votes294 views1 answer
Dart datetime difference
Dart
6 votes338 views2 answers
Make listview not scrollable flutter
Dart
5 votes292 views3 answers
Flutter get device width
Dart
1 vote306 views1 answer
Get direction routes in mapbox flutter
Dart
1 vote300 views1 answer
Flutter linear progress indicator height
Dart
0 vote305 views1 answer
Flutter textformfield decimal
Dart
0 vote356 views1 answer
Dart create hash
Dart
1 vote287 views1 answer
Text should come below if space not available row flutter
Dart
0 vote313 views1 answer
Flutter bool variable
Dart