onCancel

common inline suspend fun <A> onCancel(fa: suspend () -> A, crossinline onCancel: suspend () -> Unit): A

Registers an onCancel handler after fa. onCancel is guaranteed to be called in case of cancellation, otherwise it’s ignored.

This function is useful for wiring cancellation tokens between fibers, building inter-op with other effect systems or testing.


guarantee	for registering a handler that is guaranteed to always run.
guaranteeCase	for registering a handler that executes for any ExitCase.

Parameters

common


fa	program that you want to register handler on
onCancel	handler to run when fa gets cancelled.