base-4.9.1.0: Basic libraries

Copyright(c) The University of Glasgow 2001
LicenseBSD-style (see the file libraries/base/LICENSE)
Maintainer[email protected]
Stabilityexperimental
Portabilitynon-portable (uses Control.Monad.ST.Lazy)
Safe HaskellSafe
LanguageHaskell2010

Data.STRef.Lazy

Contents

Description

Mutable references in the lazy ST monad.

Synopsis

STRefs

data STRef s a Source #

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) Source #

readSTRef :: STRef s a -> ST s a Source #

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

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