Text.Chatty.Finalizer

Provides handle-closing.

Documentation

class Monad m => ChFinalizer m where

Class for all handle-finalizing monads. Required for file redirections.

Minimal complete definition

mqfh, mfin

Methods

mqfh :: Handle -> m ()

Enqueue handle

mqfhs :: [Handle] -> m ()

Enqueue list of handles

mfin :: m ()

Finalize all queued handles

Instances

MonadIO m => ChFinalizer (HandleCloserT m)

ChFinalizer m => ChFinalizer (InRedirT m)

ChFinalizer m => ChFinalizer (HereStringT m)

newtype HandleCloserT m a

Handle-closing transformer

Constructors

HandleCloser

Fields

runHandleCloserT :: [Handle] -> m (a, [Handle])

Instances

MonadTrans HandleCloserT

Monad m => Monad (HandleCloserT m)

Monad m => Functor (HandleCloserT m)

Monad m => Applicative (HandleCloserT m)

MonadIO m => MonadIO (HandleCloserT m)

MonadIO m => ChFinalizer (HandleCloserT m)

withLazyIO :: (MonadIO m, Functor m) => HandleCloserT m a -> m a

Run function with handle closer