unliftio-0.1.1.0: The MonadUnliftIO typeclass for unlifting monads to IO (batteries included)

Safe HaskellSafe
LanguageHaskell2010

UnliftIO.Resource

Description

Unlifted Control.Monad.Trans.Resource.

Since: 0.1.0.0

Synopsis

Documentation

data ResourceT m a :: (* -> *) -> * -> * #

The Resource transformer. This transformer keeps track of all registered actions, and calls them upon exit (via runResourceT). Actions may be registered via register, or resources may be allocated atomically via allocate. allocate corresponds closely to bracket.

Releasing may be performed before exit via the release function. This is a highly recommended optimization, as it will ensure that scarce resources are freed early. Note that calling release will deregister the action, so that a release action will only ever be called once.

Since 0.3.0

Instances

MonadTrans ResourceT 

Methods

lift :: Monad m => m a -> ResourceT m a #

MonadTransControl ResourceT 

Associated Types

type StT (ResourceT :: (* -> *) -> * -> *) a :: *

Methods

liftWith :: Monad m => (Run ResourceT -> m a) -> ResourceT m a

restoreT :: Monad m => m (StT ResourceT a) -> ResourceT m a

MMonad ResourceT

Since 0.4.7

Methods

embed :: Monad n => (forall a. m a -> ResourceT n a) -> ResourceT m b -> ResourceT n b

MFunctor ResourceT

Since 0.4.7

Methods

hoist :: Monad m => (forall a. m a -> n a) -> ResourceT m b -> ResourceT n b

MonadRWS r w s m => MonadRWS r w s (ResourceT m) 
MonadBaseControl b m => MonadBaseControl b (ResourceT m) 

Associated Types

type StM (ResourceT m :: * -> *) a :: *

Methods

liftBaseWith :: (RunInBase (ResourceT m) b -> b a) -> ResourceT m a

restoreM :: StM (ResourceT m) a -> ResourceT m a

MonadState s m => MonadState s (ResourceT m) 

Methods

get :: ResourceT m s

put :: s -> ResourceT m ()

state :: (s -> (a, s)) -> ResourceT m a

MonadWriter w m => MonadWriter w (ResourceT m) 

Methods

writer :: (a, w) -> ResourceT m a

tell :: w -> ResourceT m ()

listen :: ResourceT m a -> ResourceT m (a, w)

pass :: ResourceT m (a, w -> w) -> ResourceT m a

MonadReader r m => MonadReader r (ResourceT m) 

Methods

ask :: ResourceT m r

local :: (r -> r) -> ResourceT m a -> ResourceT m a

reader :: (r -> a) -> ResourceT m a

MonadError e m => MonadError e (ResourceT m) 

Methods

throwError :: e -> ResourceT m a

catchError :: ResourceT m a -> (e -> ResourceT m a) -> ResourceT m a

MonadBase b m => MonadBase b (ResourceT m) 

Methods

liftBase :: b α -> ResourceT m α

Monad m => Monad (ResourceT m) 

Methods

(>>=) :: ResourceT m a -> (a -> ResourceT m b) -> ResourceT m b #

(>>) :: ResourceT m a -> ResourceT m b -> ResourceT m b #

return :: a -> ResourceT m a #

fail :: String -> ResourceT m a #

Functor m => Functor (ResourceT m) 

Methods

fmap :: (a -> b) -> ResourceT m a -> ResourceT m b #

(<$) :: a -> ResourceT m b -> ResourceT m a #

MonadFix m => MonadFix (ResourceT m)

Since: 1.1.8

Methods

mfix :: (a -> ResourceT m a) -> ResourceT m a #

Applicative m => Applicative (ResourceT m) 

Methods

pure :: a -> ResourceT m a #

(<*>) :: ResourceT m (a -> b) -> ResourceT m a -> ResourceT m b #

(*>) :: ResourceT m a -> ResourceT m b -> ResourceT m b #

(<*) :: ResourceT m a -> ResourceT m b -> ResourceT m a #

MonadIO m => MonadIO (ResourceT m) 

Methods

liftIO :: IO a -> ResourceT m a #

Alternative m => Alternative (ResourceT m)

Since 1.1.5

Methods

empty :: ResourceT m a #

(<|>) :: ResourceT m a -> ResourceT m a -> ResourceT m a #

some :: ResourceT m a -> ResourceT m [a] #

many :: ResourceT m a -> ResourceT m [a] #

MonadPlus m => MonadPlus (ResourceT m)

Since 1.1.5

Methods

mzero :: ResourceT m a #

mplus :: ResourceT m a -> ResourceT m a -> ResourceT m a #

MonadLogger m => MonadLogger (ResourceT m) 

Methods

monadLoggerLog :: ToLogStr msg => Loc -> LogSource -> LogLevel -> msg -> ResourceT m () #

MonadLoggerIO m => MonadLoggerIO (ResourceT m) 

Methods

askLoggerIO :: ResourceT m (Loc -> LogSource -> LogLevel -> LogStr -> IO ()) #

(MonadThrow m, MonadBase IO m, MonadIO m, Applicative m) => MonadResource (ResourceT m) 

Methods

liftResourceT :: ResourceT IO a -> ResourceT m a #

MonadThrow m => MonadThrow (ResourceT m) 

Methods

throwM :: Exception e => e -> ResourceT m a #

MonadMask m => MonadMask (ResourceT m) 

Methods

mask :: ((forall a. ResourceT m a -> ResourceT m a) -> ResourceT m b) -> ResourceT m b

uninterruptibleMask :: ((forall a. ResourceT m a -> ResourceT m a) -> ResourceT m b) -> ResourceT m b

MonadCont m => MonadCont (ResourceT m) 

Methods

callCC :: ((a -> ResourceT m b) -> ResourceT m a) -> ResourceT m a

MonadCatch m => MonadCatch (ResourceT m) 

Methods

catch :: Exception e => ResourceT m a -> (e -> ResourceT m a) -> ResourceT m a

type StT ResourceT a 
type StT ResourceT a = a
type StM (ResourceT m) a 
type StM (ResourceT m) a = StM m a

runResourceT :: MonadUnliftIO m => ResourceT m a -> m a Source #

Unlifted version of runResourceT.

Since: 0.1.0.0

liftResourceT :: MonadIO m => ResourceT IO a -> ResourceT m a Source #

Lifted version of liftResourceT.

Since: 0.1.0.0