[Haskell-cafe] Problem with own written monad

Derek Elkins derek.a.elkins at gmail.com
Mon Jan 7 12:59:57 EST 2008

On Mon, 2008-01-07 at 18:21 +0000, Paul Johnson wrote:
> Miguel Mitrofanov wrote:
> >
> > Yes. It's simply impossible. The Stack data type can't be turned into 
> > a monad.
> Why not?  Surely this is just a variation on the theme of a state monad?

I somewhat explain in this reply:

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