Has anyone investigated monadic call-with-current-continuation in 
Haskell? Given this:

    class (Monad m) => PeirceMonad m where
                {
                peirceM :: ((a -> m b) -> m a) -> m a;
                };

...which Monads can be made PeirceMonads?

The corresponding non-monadic function:

    peirce :: ((a -> b) -> a) -> a;

probably can't be defined.


-- 
Ashley Yakeley, Seattle WA

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