arrow-fx-coroutines/arrow.fx.coroutines/autoCloseable

autoCloseable

suspend fun <A : AutoCloseable> ResourceScope.autoCloseable(closingDispatcher: CoroutineDispatcher = Dispatchers.IO, autoCloseable: suspend () -> A): A(source)

Creates a Resource from an AutoCloseable, which uses AutoCloseable.close for releasing.

import arrow.fx.coroutines.resourceScope
import arrow.fx.coroutines.autoCloseable
import java.io.FileInputStream

suspend fun copyFile(src: String, dest: String): Unit =
  resourceScope {
    val a: FileInputStream = autoCloseable { FileInputStream(src) }
    val b: FileInputStream = autoCloseable { FileInputStream(dest) }
    /** read from [a] and write to [b]. **/
} // Both resources will be closed accordingly to their #close methods
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fun <A : AutoCloseable> autoCloseable(closingDispatcher: CoroutineDispatcher = Dispatchers.IO, autoCloseable: suspend () -> A): Resource<A>(source)