Copyright	(c) Eduard Sergeev 2013
License	BSD-style (see the file LICENSE)
Maintainer	eduard.sergeev@gmail.com
Stability	experimental
Portability	non-portable (multi-param classes, flexible instances)
Safe Haskell	None
Language	Haskell2010

Control.Monad.Trans.Memo.StateCache

Description

Generic StateCache - wrapper around StateT

Synopsis

data StateCache c m a
runStateCache :: StateCache s m a -> s -> m (a, s)
container :: Monad m => StateCache c m c
setContainer :: Monad m => c -> StateCache c m ()
evalStateCache :: Monad m => StateCache c m a -> c -> m a

Documentation

data StateCache c m a Source #

Instances

(PrimMonad m, PrimState m ~ s, MaybeLike e v, MVector c e) => MonadMemo Int v (Cache c s e m) Source #
Instance details Defined in Control.Monad.Memo.Vector.Expandable Methods memo :: (Int -> Cache c s e m v) -> Int -> Cache c s e m v Source #
(Monad m, MapLike c k v) => MonadMemo k v (MemoStateT c k v m) Source #
Instance details Defined in Control.Monad.Trans.Memo.State Methods memo :: (k -> MemoStateT c k v m v) -> k -> MemoStateT c k v m v Source #
(PrimMonad m, PrimState m ~ s, MaybeLike e v, MVector c e) => MonadCache Int v (Cache c s e m) Source #
Instance details Defined in Control.Monad.Memo.Vector.Expandable Methods lookup :: Int -> Cache c s e m (Maybe v) Source # add :: Int -> v -> Cache c s e m () Source #
(Monad m, MapLike c k v) => MonadCache k v (MemoStateT c k v m) Source #
Instance details Defined in Control.Monad.Trans.Memo.State Methods lookup :: k -> MemoStateT c k v m (Maybe v) Source # add :: k -> v -> MemoStateT c k v m () Source #
MonadTrans (StateCache c) Source #
Instance details Defined in Control.Monad.Trans.Memo.StateCache Methods lift :: Monad m => m a -> StateCache c m a #
Monad m => Monad (StateCache c m) Source #
Instance details Defined in Control.Monad.Trans.Memo.StateCache Methods (>>=) :: StateCache c m a -> (a -> StateCache c m b) -> StateCache c m b # (>>) :: StateCache c m a -> StateCache c m b -> StateCache c m b # return :: a -> StateCache c m a # fail :: String -> StateCache c m a #
Functor m => Functor (StateCache c m) Source #
Instance details Defined in Control.Monad.Trans.Memo.StateCache Methods fmap :: (a -> b) -> StateCache c m a -> StateCache c m b # (<$) :: a -> StateCache c m b -> StateCache c m a #
MonadFix m => MonadFix (StateCache c m) Source #
Instance details Defined in Control.Monad.Trans.Memo.StateCache Methods mfix :: (a -> StateCache c m a) -> StateCache c m a #
Monad m => Applicative (StateCache c m) Source #
Instance details Defined in Control.Monad.Trans.Memo.StateCache Methods pure :: a -> StateCache c m a # (<>) :: StateCache c m (a -> b) -> StateCache c m a -> StateCache c m b # liftA2 :: (a -> b -> c0) -> StateCache c m a -> StateCache c m b -> StateCache c m c0 # (>) :: StateCache c m a -> StateCache c m b -> StateCache c m b # (<*) :: StateCache c m a -> StateCache c m b -> StateCache c m a #
MonadIO m => MonadIO (StateCache c m) Source #
Instance details Defined in Control.Monad.Trans.Memo.StateCache Methods liftIO :: IO a -> StateCache c m a #
MonadPlus m => Alternative (StateCache c m) Source #
Instance details Defined in Control.Monad.Trans.Memo.StateCache Methods empty :: StateCache c m a # (<\|>) :: StateCache c m a -> StateCache c m a -> StateCache c m a # some :: StateCache c m a -> StateCache c m [a] # many :: StateCache c m a -> StateCache c m [a] #
MonadPlus m => MonadPlus (StateCache c m) Source #
Instance details Defined in Control.Monad.Trans.Memo.StateCache Methods mzero :: StateCache c m a # mplus :: StateCache c m a -> StateCache c m a -> StateCache c m a #

runStateCache :: StateCache s m a -> s -> m (a, s) Source #

container :: Monad m => StateCache c m c Source #

Returns internal container

setContainer :: Monad m => c -> StateCache c m () Source #

Assigns new value to internal container

evalStateCache :: Monad m => StateCache c m a -> c -> m a Source #

Evaluates computation discarding the resulting container