arrow-fx-coroutines / arrow.fx.coroutines.stream / Stream / effect_

effect_

fun effect_(fa: suspend () -> Unit): Stream<Nothing>

Creates a stream that evaluates the supplied fa for its effect, discarding the output value. As a result, the returned stream emits no elements and hence has output type INothing.

Alias for effect(fa).drain.

import arrow.fx.coroutines.stream.*

//sampleEnd
suspend fun main(): Unit =
  Stream.effect_ { println("Ran") }
    .toList()
    .let(::println) // []
//sampleStart