Have you had experience using the RxKotlin library in your projects?

Yes, I have used the RxKotlin library in my Android projects for reactive programming.

RxKotlin is a wrapper over RxJava that provides a more convenient and idiomatic Kotlin API for working with asynchronous data streams.

An example of using RxKotlin to process a sequence of numbers with filtering and subscription:

import io.reactivex.rxkotlin.*

fun main() {
    val numbers = listOf(1, 2, 3, 4, 5)
    numbers.toObservable()
        .filter { it % 2 == 0 }
        .subscribe { println("Even number: $it") }
}

RxKotlin helps easily combine, transform, and process data asynchronously, which improves the readability and maintainability of code in Android applications.