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

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

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