Control.Error.Extensions

This module exports bracket-like functions for ExceptT e IO.

Documentation

bracketE :: (MonadBaseControl IO m, MonadError e m) => m a -> (a -> m b) -> (a -> m c) -> m c

Analogous to bracket, but for ExceptT e IO (or any MonadError allowing bracket lifting).

bracketE_ :: (MonadBaseControl IO m, MonadError e m) => m a -> m b -> m c -> m c

A variant of bracketE where the return value from the first computation is not required.