arrow-fx-coroutines/arrow.fx.coroutines/resource

resource

fun <A> resource(block: suspend ResourceScope.() -> A): Resource<A>

fun <A> resource(acquire: suspend () -> A, release: suspend (A, ExitCase) -> Unit): Resource<A>

Construct a Resource from an allocating function acquire and a release function release.

import arrow.fx.coroutines.resource
import arrow.fx.coroutines.resourceScope

val resource = resource {
  install({ 42.also { println("Getting expensive resource") } }) { r, exitCase ->
    println("Releasing expensive resource: $r, exit: $exitCase")
  }
}

suspend fun main(): Unit = resourceScope {
  val res = resource.bind()
  println("Expensive resource under use! $res")
}