| Safe Haskell | Safe-Inferred |
|---|
Data.MRef.Types
Description
This module defines the "MRef" abstraction, which is a set of
type-classes for things that behave like MVars.
See the documentation there for more info.
This interface may be subject to future expansion. Presently, rather
than providing something like tryTakeMVar,
instances for "ReadRef sr m (Maybe a)" are
provided, giving readReference the same type
tryTakeMRef would have if it existed. There is currently nothing like
tryPutMVar, though. Perhaps there should be.
Or, perhaps this is the sort of thing the weird (to me) signature of
atomicModifyIORef is for, and an argument for a similar
signature for modifyStateRef or the addition of
a new atomicModifyStateRef function.
I would like to resolve these questions in version 0.3 of this package.