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| Control.Monad.RWS.Lazy | | Portability | non-portable (multi-param classes, functional dependencies) | | Stability | experimental | | Maintainer | libraries@haskell.org |
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| Description |
Lazy RWS monad.
Inspired by the paper
/Functional Programming with Overloading and
Higher-Order Polymorphism/,
Mark P Jones (http://web.cecs.pdx.edu/~mpj/)
Advanced School of Functional Programming, 1995.
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| Documentation |
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| newtype RWS r w s a |
| Constructors | | RWS | | | runRWS :: r -> s -> (a, s, w) | |
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|  Instances | |
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| evalRWS :: RWS r w s a -> r -> s -> (a, w) |
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| execRWS :: RWS r w s a -> r -> s -> (s, w) |
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| mapRWS :: ((a, s, w) -> (b, s, w')) -> RWS r w s a -> RWS r w' s b |
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| withRWS :: (r' -> s -> (r, s)) -> RWS r w s a -> RWS r' w s a |
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| newtype RWST r w s m a |
| Constructors | | RWST | | | runRWST :: r -> s -> m (a, s, w) | |
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| | Instances | | (Monoid w, Monad m) => MonadRWS r w s (RWST r w s m) | | (Monoid w, Monad m) => MonadWriter w (RWST r w s m) | | (Monoid w, Monad m) => MonadState s (RWST r w s m) | | (Monoid w, Monad m) => MonadReader r (RWST r w s m) | | (Monoid w, MonadError e m) => MonadError e (RWST r w s m) | | Monoid w => MonadTrans (RWST r w s) | | (Monoid w, Monad m) => Monad (RWST r w s m) | | Monad m => Functor (RWST r w s m) | | (Monoid w, MonadFix m) => MonadFix (RWST r w s m) | | (Monoid w, MonadPlus m) => MonadPlus (RWST r w s m) | | (Monoid w, MonadIO m) => MonadIO (RWST r w s m) | | (Monoid w, MonadCont m) => MonadCont (RWST r w s m) |
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| evalRWST :: Monad m => RWST r w s m a -> r -> s -> m (a, w) |
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| execRWST :: Monad m => RWST r w s m a -> r -> s -> m (s, w) |
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| mapRWST :: (m (a, s, w) -> n (b, s, w')) -> RWST r w s m a -> RWST r w' s n b |
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| withRWST :: (r' -> s -> (r, s)) -> RWST r w s m a -> RWST r' w s m a |
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| module Control.Monad.RWS.Class |
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| module Control.Monad.Trans |
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| Produced by Haddock version 2.3.0 |
