Java – kotlin stream Peek (…) method

Java. In kotlin util. stream. Stream<> . What is the best choice for Peek (...)?

https://docs.oracle.com/javase/8/docs/api/java/util/stream/Stream.html#peek -java. util. function. Consumer-

There seems to be no alternative intermediate operation:

https://kotlinlang.org/api/latest/jvm/stdlib/kotlin.streams/index.html

I found that only termination foreach (...)

Solution

Kotlin's stream substitute is @ L_ 403_ 3@.

listOf(1,2,3,4,5)
    .asSequence()
    .filter { it < 3 }
    .onEach { println("filtered $it") }
    .map { it * 10 }
    .forEach { println("final: $it") }

This is what oneach has to do

Interesting fact: kotlin wanted to call their sequence "streams" before it was obvious that Java would do the same, so they renamed it "sequences"