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

10 votes307 views2 answers
Make scaffold scrollable flutter
Dart
1 vote267 views2 answers
Dart filter list
Dart
7 votes279 views2 answers
Showdialog with builder flutter
Dart
0 vote282 views1 answer
Dart break double for loop
Dart
0 vote273 views2 answers
Flutter pass onchanged callback in arguments
Dart
5 votes286 views1 answer
Flutter check if string is number dart
Dart
9 votes286 views1 answer
Flutter logo flutter
Dart
2 votes262 views1 answer
Phone authentication firebase flutter
Dart
3 votes285 views1 answer
Flutter disable scroll animated list
Dart
0 vote254 views1 answer
Flutter leading
Dart