-----------------------------------------------------------------------------
---
+-- |
-- Module : Data.STRef
-- Copyright : (c) The University of Glasgow 2001
--- License : BSD-style (see the file libraries/core/LICENSE)
+-- License : BSD-style (see the file libraries/base/LICENSE)
--
-- Maintainer : libraries@haskell.org
-- Stability : experimental
-- Portability : non-portable (requires non-portable module ST)
--
--- $Id: STRef.hs,v 1.2 2001/07/03 11:37:50 simonmar Exp $
---
-- Mutable references in the ST monad.
--
-----------------------------------------------------------------------------
STRef, -- abstract, instance Eq
newSTRef, -- :: a -> ST s (STRef s a)
readSTRef, -- :: STRef s a -> ST s a
- writeSTRef -- :: STRef s a -> a -> ST s ()
+ writeSTRef, -- :: STRef s a -> a -> ST s ()
+ modifySTRef -- :: STRef s a -> (a -> a) -> ST s ()
) where
import Prelude