CombineLatestStream.list wont take multiple instances of already combined Stream

[devkirch]

Hello,

not sure if this is a bug or intendend behaviour.

You have multiple instances of a Stream combined with Rx.combineLatest2 like below

  Stream<List<Post>> feedstream()  {
    return Rx.combineLatest2(
        poststream().asBroadcastStream(), challengesstream().asBroadcastStream(),
            (List<Post> posts, List<Challenge> challenges) {
          return challenges.map((challenge) {
            return Post(
                description: challenge.description,
                challengeid: challenge.id,
                isvideo: true,
                mediaurl: challenge.videourl,
                creationdate: challenge.creationdate,
                thumbnail: challenge.thumbnail,
                userid: challenge.userid,
                id: challenge.id,
                ischallenge: true);
          }).toList() + posts;
        }).asBroadcastStream();
  }

If you want to add those Streams at runtime to a List which holds those Object and use CombineLatestStream.list, Streambuilder wont emit new values, only those who have been assigned at Start.

 _listofstreams!.add(feedstream());

  return StreamBuilder<List<List<Post>>>(
        stream: CombineLatestStream.list(_listofstreams!),
        builder: (context, posts) {
          if (!posts.hasData) {
            return Container();
          }
          if (posts.connectionState == ConnectionState.waiting) {
            return Container(); 
          }

If you instead use multiple Streams which have not been combined with Rx.combineLatest2, Streambuilder will emit all values.

[hoc081098]

I think that is expected behavior of combineLatest, combined Stream will emit only when all Streams emitted

[hoc081098]

Trying startWith operator on each Stream