CODEWITHSUNDEEP
flutterdart
iDecode
iDecode

Reputation: 28906

How to convert a stream to another type without using map?

I've this code:

Stream<int> get fooStream async* {
  barStream.listen((_) async* { 
    int baz = await getBaz();
    yield baz; // Does not work
  });  
}

How can I return Stream<int> from another stream?

Note: If I use map to transform the stream, then I'll have to return Stream<Future<int>>, but I want to return Stream<int>. I also don't feel like using rxdart pacakge for this tiny thing.

Upvotes: 0

Views: 1016

Answers (1)

Alexander Farkas
Alexander Farkas

Reputation: 688

  1. Use asyncMap.

    barStream.asyncMap((e) => getBaz())

  2. Use await for

    Stream<int> get fooStream async* {
 await for (final item in barStream) {
   yield await getBaz();
 }
}

Upvotes: 3

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