RxJava + Retorfit: how to wait for 2 requests to complete?

Question

Android

I'm just starting to learn RxJava? Possibly a lammer question: I'm doing
2 requests using Retrofit. I get 2 Observables. Now I need to do something when both of these requests are executed (if anyone is familiar with the concept of Promise, then something like Promise.all )
Is it possible to do this with RxJava

Answer 1

zip or combineLatest
And in general there are docks, with pictures. You can read all the operators in the evening and then remember if necessary.