RxJava: How to convert List of objects to List of another objects

Question

I have the List of SourceObjects and I need to convert it to the List of ResultObjects.

I can fetch one object to another using method of ResultObject:

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Answer 1

Non blocking conversion using nested map function

val ints: Observable> = Observable.fromArray(listOf(1, 2, 3))

val strings: Observable> = ints.map { list -> list.map { it.toString() } }