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1. class (Monoid w, MonadReader r m, MonadWriter w m, MonadState s m) => MonadRWS r w s (m :: Type -> Type) | m -> r, m -> w, m -> s

   mtl	Control.Monad.RWS.Class

   No documentation available.

2. evalRWS :: RWS r w s a -> r -> s -> (a, w)

   mtl	Control.Monad.RWS.Lazy

   Evaluate a computation with the given initial state and environment, returning the final value and output, discarding the final state.

3. evalRWST :: Monad m => RWST r w s m a -> r -> s -> m (a, w)

   mtl	Control.Monad.RWS.Lazy

   Evaluate a computation with the given initial state and environment, returning the final value and output, discarding the final state.

4. execRWS :: RWS r w s a -> r -> s -> (s, w)

   mtl	Control.Monad.RWS.Lazy

   Evaluate a computation with the given initial state and environment, returning the final state and output, discarding the final value.

5. execRWST :: Monad m => RWST r w s m a -> r -> s -> m (s, w)

   mtl	Control.Monad.RWS.Lazy

   Evaluate a computation with the given initial state and environment, returning the final state and output, discarding the final value.

6. mapRWS :: ((a, s, w) -> (b, s, w')) -> RWS r w s a -> RWS r w' s b

   mtl	Control.Monad.RWS.Lazy

   Map the return value, final state and output of a computation using the given function.

   • runRWS (mapRWS f m) r s = f (runRWS m r
     s)

7. mapRWST :: (m (a, s, w) -> n (b, s, w')) -> RWST r w s m a -> RWST r w' s n b

   mtl	Control.Monad.RWS.Lazy

   Map the inner computation using the given function.

   • runRWST (mapRWST f m) r s = f (runRWST m
     r s)

8. runRWS :: RWS r w s a -> r -> s -> (a, s, w)

   mtl	Control.Monad.RWS.Lazy

   Unwrap an RWS computation as a function. (The inverse of rws.)

9. runRWST :: RWST r w s m a -> r -> s -> m (a, s, w)

   mtl	Control.Monad.RWS.Lazy

   No documentation available.

10. withRWS :: (r' -> s -> (r, s)) -> RWS r w s a -> RWS r' w s a

    mtl	Control.Monad.RWS.Lazy

    withRWS f m executes action m with an initial environment and state modified by applying f.

    • runRWS (withRWS f m) r s = uncurry
      (runRWS m) (f r s)

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