Basement.Compat.MonadTrans

An internal and really simple monad transformers, without any bells and whistse.

Documentation

newtype State s m a

Simple State monad

Constructors

State

Fields

• runState :: s -> m (a, s)

Instances

Monad m => Monad (State r m)

Methods

(>>=) :: State r m a -> (a -> State r m b) -> State r m b

(>>) :: State r m a -> State r m b -> State r m b

return :: a -> State r m a

fail :: String -> State r m a

Monad m => Functor (State s m)

Methods

fmap :: (a -> b) -> State s m a -> State s m b

(<$) :: a -> State s m b -> State s m a

Monad m => Applicative (State s m)

Methods

pure :: a -> State s m a

(<*>) :: State s m (a -> b) -> State s m a -> State s m b

liftA2 :: (a -> b -> c) -> State s m a -> State s m b -> State s m c

(*>) :: State s m a -> State s m b -> State s m b

(<*) :: State s m a -> State s m b -> State s m a

newtype Reader r m a

Simple Reader monad

Constructors

Reader

Fields

• runReader :: r -> m a

Instances

Monad m => Monad (Reader r m)

Methods

(>>=) :: Reader r m a -> (a -> Reader r m b) -> Reader r m b

(>>) :: Reader r m a -> Reader r m b -> Reader r m b

return :: a -> Reader r m a

fail :: String -> Reader r m a

Monad m => Functor (Reader r m)

Methods

fmap :: (a -> b) -> Reader r m a -> Reader r m b

(<$) :: a -> Reader r m b -> Reader r m a

Monad m => Applicative (Reader r m)

Methods

pure :: a -> Reader r m a

(<*>) :: Reader r m (a -> b) -> Reader r m a -> Reader r m b

liftA2 :: (a -> b -> c) -> Reader r m a -> Reader r m b -> Reader r m c

(*>) :: Reader r m a -> Reader r m b -> Reader r m b

(<*) :: Reader r m a -> Reader r m b -> Reader r m a