Control.Monad.Fix

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Control.Monad.Fix |
Portability | portable
Stability | experimental
Maintainer | libraries@haskell.org
Description
The Fix monad. Inspired by the paper Functional Programming with Overloading and Higher-Order Polymorphism, Mark P Jones (http://www.cse.ogi.edu/~mpj) Advanced School of Functional Programming, 1995.
class (Monad m) => MonadFix m where
Methods
mfix :: (a -> m a) -> m a
Instances
(Error e) => MonadFix (Either e)
(MonadFix m, Error e) => MonadFix (ErrorT e m)
MonadFix Maybe
MonadFix IO
MonadFix Identity
(Monoid w) => MonadFix (RWS r w s)
(Monoid w, MonadFix m) => MonadFix (RWST r w s m)
MonadFix ((->) r)
MonadFix (Reader r)
(MonadFix m) => MonadFix (ReaderT r m)
MonadFix (ST s)
MonadFix (State s)
(MonadFix m) => MonadFix (StateT s m)
(Monoid w) => MonadFix (Writer w)
(Monoid w, MonadFix m) => MonadFix (WriterT w m)
fix :: (a -> a) -> a
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