[Haskell-cafe] Why no IO transformer monad?

[Udo Stenzel]

Keean Schupke <k.schupke at imperial.ac.uk> schrieb am 20.12.04 10:25:36:
> 
> What about:
> 
>     runIOT :: Monad m => IOT m a -> IO (m a)

I have a gut feeling that this is unimplementable.  However, IO (m a) is
what you get using the transformer version of m over IO.  


Udo.


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