rio-0.1.22.0: A standard library for Haskell
Safe HaskellSafe-Inferred
LanguageHaskell2010

RIO.State

Description

Provides reexports of MonadState and related helpers.

Since: 0.1.4.0

Documentation

class Monad m => MonadState s (m :: Type -> Type) | m -> s where #

Minimal complete definition

state | get, put

Methods

get :: m s #

put :: s -> m () #

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

Instances

Instances details
HasStateRef s env => MonadState s (RIO env) Source # 
Instance details

Defined in RIO.Prelude.RIO

Methods

get :: RIO env s #

put :: s -> RIO env () #

state :: (s -> (a, s)) -> RIO env a #

MonadState s m => MonadState s (ListT m) 
Instance details

Defined in Control.Monad.State.Class

Methods

get :: ListT m s #

put :: s -> ListT m () #

state :: (s -> (a, s)) -> ListT m a #

MonadState s m => MonadState s (MaybeT m) 
Instance details

Defined in Control.Monad.State.Class

Methods

get :: MaybeT m s #

put :: s -> MaybeT m () #

state :: (s -> (a, s)) -> MaybeT m a #

(Error e, MonadState s m) => MonadState s (ErrorT e m) 
Instance details

Defined in Control.Monad.State.Class

Methods

get :: ErrorT e m s #

put :: s -> ErrorT e m () #

state :: (s -> (a, s)) -> ErrorT e m a #

MonadState s m => MonadState s (ExceptT e m) 
Instance details

Defined in Control.Monad.State.Class

Methods

get :: ExceptT e m s #

put :: s -> ExceptT e m () #

state :: (s -> (a, s)) -> ExceptT e m a #

MonadState s m => MonadState s (IdentityT m) 
Instance details

Defined in Control.Monad.State.Class

Methods

get :: IdentityT m s #

put :: s -> IdentityT m () #

state :: (s -> (a, s)) -> IdentityT m a #

MonadState s m => MonadState s (ReaderT r m) 
Instance details

Defined in Control.Monad.State.Class

Methods

get :: ReaderT r m s #

put :: s -> ReaderT r m () #

state :: (s -> (a, s)) -> ReaderT r m a #

Monad m => MonadState s (StateT s m) 
Instance details

Defined in Control.Monad.State.Class

Methods

get :: StateT s m s #

put :: s -> StateT s m () #

state :: (s -> (a, s)) -> StateT s m a #

Monad m => MonadState s (StateT s m) 
Instance details

Defined in Control.Monad.State.Class

Methods

get :: StateT s m s #

put :: s -> StateT s m () #

state :: (s -> (a, s)) -> StateT s m a #

(Monoid w, MonadState s m) => MonadState s (WriterT w m) 
Instance details

Defined in Control.Monad.State.Class

Methods

get :: WriterT w m s #

put :: s -> WriterT w m () #

state :: (s -> (a, s)) -> WriterT w m a #

(Monoid w, MonadState s m) => MonadState s (WriterT w m) 
Instance details

Defined in Control.Monad.State.Class

Methods

get :: WriterT w m s #

put :: s -> WriterT w m () #

state :: (s -> (a, s)) -> WriterT w m a #

MonadState s m => MonadState s (ContT r m) 
Instance details

Defined in Control.Monad.State.Class

Methods

get :: ContT r m s #

put :: s -> ContT r m () #

state :: (s -> (a, s)) -> ContT r m a #

(Monad m, Monoid w) => MonadState s (RWST r w s m) 
Instance details

Defined in Control.Monad.State.Class

Methods

get :: RWST r w s m s #

put :: s -> RWST r w s m () #

state :: (s -> (a, s)) -> RWST r w s m a #

(Monad m, Monoid w) => MonadState s (RWST r w s m) 
Instance details

Defined in Control.Monad.State.Class

Methods

get :: RWST r w s m s #

put :: s -> RWST r w s m () #

state :: (s -> (a, s)) -> RWST r w s m a #

gets :: MonadState s m => (s -> a) -> m a #

modify :: MonadState s m => (s -> s) -> m () #

modify' :: MonadState s m => (s -> s) -> m () #

type State s = StateT s Identity #

runState :: State s a -> s -> (a, s) #

evalState :: State s a -> s -> a #

execState :: State s a -> s -> s #

mapState :: ((a, s) -> (b, s)) -> State s a -> State s b #

withState :: (s -> s) -> State s a -> State s a #

newtype StateT s (m :: Type -> Type) a #

Constructors

StateT 

Fields

Instances

Instances details
MonadReader r m => MonadReader r (StateT s m) 
Instance details

Defined in Control.Monad.Reader.Class

Methods

ask :: StateT s m r #

local :: (r -> r) -> StateT s m a -> StateT s m a #

reader :: (r -> a) -> StateT s m a

Monad m => MonadState s (StateT s m) 
Instance details

Defined in Control.Monad.State.Class

Methods

get :: StateT s m s #

put :: s -> StateT s m () #

state :: (s -> (a, s)) -> StateT s m a #

MonadWriter w m => MonadWriter w (StateT s m) 
Instance details

Defined in Control.Monad.Writer.Class

Methods

writer :: (a, w) -> StateT s m a #

tell :: w -> StateT s m () #

listen :: StateT s m a -> StateT s m (a, w) #

pass :: StateT s m (a, w -> w) -> StateT s m a #

MonadTrans (StateT s) 
Instance details

Defined in Control.Monad.Trans.State.Lazy

Methods

lift :: Monad m => m a -> StateT s m a #

MonadFail m => MonadFail (StateT s m) 
Instance details

Defined in Control.Monad.Trans.State.Lazy

Methods

fail :: String -> StateT s m a #

MonadFix m => MonadFix (StateT s m) 
Instance details

Defined in Control.Monad.Trans.State.Lazy

Methods

mfix :: (a -> StateT s m a) -> StateT s m a

MonadIO m => MonadIO (StateT s m) 
Instance details

Defined in Control.Monad.Trans.State.Lazy

Methods

liftIO :: IO a -> StateT s m a

Contravariant m => Contravariant (StateT s m) 
Instance details

Defined in Control.Monad.Trans.State.Lazy

Methods

contramap :: (a' -> a) -> StateT s m a -> StateT s m a'

(>$) :: b -> StateT s m b -> StateT s m a

(Functor m, MonadPlus m) => Alternative (StateT s m) 
Instance details

Defined in Control.Monad.Trans.State.Lazy

Methods

empty :: StateT s m a

(<|>) :: StateT s m a -> StateT s m a -> StateT s m a #

some :: StateT s m a -> StateT s m [a] #

many :: StateT s m a -> StateT s m [a] #

(Functor m, Monad m) => Applicative (StateT s m) 
Instance details

Defined in Control.Monad.Trans.State.Lazy

Methods

pure :: a -> StateT s m a #

(<*>) :: StateT s m (a -> b) -> StateT s m a -> StateT s m b #

liftA2 :: (a -> b -> c) -> StateT s m a -> StateT s m b -> StateT s m c #

(*>) :: StateT s m a -> StateT s m b -> StateT s m b #

(<*) :: StateT s m a -> StateT s m b -> StateT s m a #

Functor m => Functor (StateT s m) 
Instance details

Defined in Control.Monad.Trans.State.Lazy

Methods

fmap :: (a -> b) -> StateT s m a -> StateT s m b #

(<$) :: a -> StateT s m b -> StateT s m a #

Monad m => Monad (StateT s m) 
Instance details

Defined in Control.Monad.Trans.State.Lazy

Methods

(>>=) :: StateT s m a -> (a -> StateT s m b) -> StateT s m b #

(>>) :: StateT s m a -> StateT s m b -> StateT s m b #

return :: a -> StateT s m a #

MonadPlus m => MonadPlus (StateT s m) 
Instance details

Defined in Control.Monad.Trans.State.Lazy

Methods

mzero :: StateT s m a #

mplus :: StateT s m a -> StateT s m a -> StateT s m a #

MonadCatch m => MonadCatch (StateT s m) 
Instance details

Defined in Control.Monad.Catch

Methods

catch :: Exception e => StateT s m a -> (e -> StateT s m a) -> StateT s m a

MonadMask m => MonadMask (StateT s m) 
Instance details

Defined in Control.Monad.Catch

Methods

mask :: ((forall a. StateT s m a -> StateT s m a) -> StateT s m b) -> StateT s m b

uninterruptibleMask :: ((forall a. StateT s m a -> StateT s m a) -> StateT s m b) -> StateT s m b

generalBracket :: StateT s m a -> (a -> ExitCase b -> StateT s m c) -> (a -> StateT s m b) -> StateT s m (b, c)

MonadThrow m => MonadThrow (StateT s m) 
Instance details

Defined in Control.Monad.Catch

Methods

throwM :: Exception e => e -> StateT s m a #

PrimMonad m => PrimMonad (StateT s m) 
Instance details

Defined in Control.Monad.Primitive

Associated Types

type PrimState (StateT s m) #

Methods

primitive :: (State# (PrimState (StateT s m)) -> (# State# (PrimState (StateT s m)), a #)) -> StateT s m a #

Monad z => Zoom (StateT s z) (StateT t z) s t 
Instance details

Defined in Lens.Micro.Mtl.Internal

Methods

zoom :: LensLike' (Zoomed (StateT s z) c) t s -> StateT s z c -> StateT t z c

type Zoomed (StateT s z) 
Instance details

Defined in Lens.Micro.Mtl.Internal

type Zoomed (StateT s z) = Focusing z
type PrimState (StateT s m) 
Instance details

Defined in Control.Monad.Primitive

type PrimState (StateT s m) = PrimState m

evalStateT :: Monad m => StateT s m a -> s -> m a #

execStateT :: Monad m => StateT s m a -> s -> m s #

mapStateT :: (m (a, s) -> n (b, s)) -> StateT s m a -> StateT s n b #

withStateT :: forall s (m :: Type -> Type) a. (s -> s) -> StateT s m a -> StateT s m a #