arrow-fx-coroutines / arrow.fx.coroutines / guaranteeCase
guaranteeCase
suspend inline fun <A> guaranteeCase(fa: suspend () -> A, crossinline finalizer: suspend (ExitCase) -> Unit): A
Guarantees execution of a given finalizer after fa regardless of success, error or cancellation, allowing for differentiating between exit conditions with the ExitCase argument of the finalizer.
As best practice, it’s not a good idea to release resources via guaranteeCase. since guaranteeCase doesn’t properly model acquiring, using and releasing resources. It only models scheduling of a finalizer after a given suspending program, so you should prefer Resource or bracketCase which captures acquiring, using and releasing into 3 separate steps to ensure resource safety.
Parameters
fa - program that you want to register handler on
finalizer - handler to run after fa.
See Also