arrow-fx-coroutines/arrow.fx.coroutines/resourceScope

resourceScope

inline suspend fun <A> resourceScope(action: suspend ResourceScope.() -> A): A

The resourceScope function creates the ResourceScope instances, runs the user action while allocating the installed resources. upon ExitCase.Completed, ExitCase.Cancelled or ExitCase.Failure runs all the release finalizers.

suspend fun main(): Unit = resourceScope {
  val dataSource = install({
    DataSource().also { it.connect() }
  }) { ds, _ -> ds.close() }

  println("Using data source: ${dataSource.users()}")
}