arrow-fx-coroutines / arrow.fx.coroutines / Semaphore / tryAcquireN

tryAcquireN

abstract suspend fun tryAcquireN(n: Long): Boolean

Acquires n permits and signals success with a Boolean immediately.

import arrow.fx.coroutines.*

suspend fun main(): Unit {
  //sampleStart
  val semaphore = Semaphore(5)
  val failed = semaphore.tryAcquireN(6)
  val succeed = semaphore.tryAcquireN(5)
  //sampleEnd
  println("failed: $failed, succeed: $succeed")
}

Parameters

n - number of permits to acquire; must be greater or equal than zero.