Dart async

Async* dart

What does async * mean in DART?

You add the async* keyword to make a function that returns 
a bunch of future values one at a time which are returned 
using keyword yield (which is used to return a value without
terminating the function execution)!

The results are wrapped in a Stream. An Example could be:

Stream<int> myStream() async* {
  //wait for Duration of 3 Secs and yield a value,
  for (int i = 0; i < 6; i++) {
    await Future.delayed(Duration(seconds: 3));
    yield i;
  }
}

void main() {
  Stream<int> instanceStream = myStream();

  instanceStream.listen((data) {
    print(data);
  });
}

Source: stackoverflow.com

Similar codes

0 vote314 views1 answer
Get first three letter of month name in flutter
Dart
1 vote298 views1 answer
Generate method o dart list
Dart
0 vote311 views1 answer
Flutter mouse paralax
Dart
4 votes262 views2 answers
How to make a card clickable in flutter
Dart
16 votes337 views4 answers
Flutter textfield label color
Dart
12 votes301 views2 answers
Conditionalstatement in widget flutter
Dart
2 votes311 views2 answers
Flluter toast
Dart
4 votes304 views2 answers
Dart length
Dart
1 vote301 views1 answer
Dart shuffle list
Dart
0 vote295 views1 answer
Flutter Popup Menu Button Example Tutorial
Dart