Copyright	(c) The University of Glasgow 2001
License	BSD-style (see the file libraries/base/LICENSE)
Maintainer	libraries@haskell.org
Stability	experimental
Portability	non-portable (uses Control.Monad.ST.Lazy)
Safe Haskell	Safe
Language	Haskell2010

Data.STRef.Lazy

Contents

Description

Mutable references in the lazy ST monad.

Synopsis

STRefs

data STRef s a #

a value of type STRef s a is a mutable variable in state thread s, containing a value of type a

Instances

Eq (STRef s a) #
Methods (==) :: STRef s a -> STRef s a -> Bool Source # (/=) :: STRef s a -> STRef s a -> Bool Source #

newSTRef :: a -> ST s (STRef s a) #

writeSTRef :: STRef s a -> a -> ST s () #

modifySTRef :: STRef s a -> (a -> a) -> ST s () #