[project @ 2001-06-28 14:15:04 by simonmar]
[packages/old-time.git] / Data / STRef.hs
1 -----------------------------------------------------------------------------
2 --
3 -- Module : Data.STRef
4 -- Copyright : (c) The University of Glasgow 2001
5 -- License : BSD-style (see the file libraries/core/LICENSE)
6 --
7 -- Maintainer : libraries@haskell.org
8 -- Stability : experimental
9 -- Portability : non-portable
10 --
11 -- $Id: STRef.hs,v 1.1 2001/06/28 14:15:02 simonmar Exp $
12 --
13 -- Mutable references in the ST monad.
14 --
15 -----------------------------------------------------------------------------
16
17 module Data.STRef (
18 STRef, -- abstract, instance Eq
19 newSTRef, -- :: a -> ST s (STRef s a)
20 readSTRef, -- :: STRef s a -> ST s a
21 writeSTRef -- :: STRef s a -> a -> ST s ()
22 ) where
23
24 import Prelude
25
26 #ifdef __GLASGOW_HASKELL__
27 import GHC.STRef
28 #endif
29
30 import Data.Dynamic
31
32 #include "Dynamic.h"
33 INSTANCE_TYPEABLE2(STRef,stRefTc,"STRef")