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

2 votes149 views1 answer
Flutter replace character in string
Dart
0 vote93 views1 answer
Flutter toast not working
Dart
14 votes143 views4 answers
How to display current date time in flutter
Dart
0 vote154 views1 answer
Dart format print
Dart
4 votes148 views2 answers
Dart length
Dart
2 votes138 views1 answer
Dart uzunlikni olish
Dart
0 vote146 views3 answers
The build failed likely due to AndroidX incompatibilities in a plugin. The tool is about to try
Dart
0 vote135 views1 answer
How to change color notification bar in flutter
Dart
0 vote96 views1 answer
Mapping object flutter
Dart
5 votes140 views1 answer
Dart list to json
Dart