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graphicbeacon/async-gen.dart

Created September 3, 2020 15:46
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Async Generators example
Raw
async-gen.dart
import 'dart:async';
void main() {
// asynchronousNaturalsTo(10).listen(print);
final controller = asyncNaturalsTo(10);
controller.stream.listen((n) => print('YEss $n'),
onDone: () {
controller.close();
});
}
Stream<int> asynchronousNaturalsTo(int n) async* {
int k = 0;
while (k < n) yield k++;
}
StreamController<int> asyncNaturalsTo(int n) {
final controller = StreamController<int>();
int k = 0;
while (k < n) {
controller.add(k);
k++;
}
return controller;
}
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