Flutter : stream two Streams into a single screen?

Question

I have two streams fetching from two different api.

Stream get monthOutStream => monthOutController.stream;
Stream get resultOu         


        

Answer 1

Observable.combineLatest2(
        aStream,
        bStream,
        (a, b, c) =>
        a != '' && b != '');

combineLatestN returns a combined stream