c# - BehaviourSubject and CombineLatest - Weird behaviour -

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given following code.

eventloopscheduler scheduler = new eventloopscheduler(ts => new thread(ts));  behaviorsubject<int> subject = new behaviorsubject<int>(0);  subject     .observeon(scheduler)     .combinelatest(observable.interval(timespan.fromseconds(1), scheduler), (x, y) => x)                             .subscribe(x => debug.writeline(x));  subject.onnext(1);

why print?

0 1 0 1 0 1 ...

instead of:

0 1 1 1 1 1 ...

first of output looks strange. both of them. guess output should be:

1 1 1 1 1

without 0. because of first interval value produced in 1 second - after call subject.onnext(1);

the other strage thing behavioursubject<int> - uk version of behaviorsubject(of t) ? :) if have own behavioursubject implementation, please extend question it.


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