Derek Elkins
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: http://www.haskell.org/pipermail/haskell-cafe/2008-January/037605.html
Which states that the data structure doesn't support the Monad, or that the Monad can't be implemented using that data structure. So, see, some stack data type can certainly be turned into a monad, but this Stack data type can't. -- (c) this sig last receiving data processing entity. Inspect headers for past copyright information. All rights reserved. Unauthorised copying, hiring, renting, public performance and/or broadcasting of this signature prohibited.