throttleLast vs sample in RxJava

Question

Are there any difference between throttleLast(long, TimeUnit) and sample(long, TimeUnit) of Observable?

Both emit the last item of interval, so they are the same method to me.

If there are differences, what would be the better use case?

Answer 1

According to the rx-java 1.0.x source code, it is the same thing, as throttleLast() is just calling sample():

https://github.com/ReactiveX/RxJava/blob/v1.0.16/src/main/java/rx/Observable.java#L8819-L8821