Observable.just() which returns Unit in Kotlin

Question

I have a piece of Observable which in the end either returns an error and retries or just returns onNext. I don't need anything in onNext, so this is just an Observable<Unit>.

Now the problem is that at the end of the chain I have to hit this onNext and I don't have anything other than good old Observable.just(). But I cannot return Observable.just(null) because it returns Nothing?, not Unit. I cannot return Unit, because it's not instantiable. Therefore I have Observable.just(null).map{}. It works, but looks ugly. Any idea for a better solution?

Answer 1

Use Observable.just(Unit). Unit itself is the single object of the type Unit.