[Haskell-beginners] [Haskell-cafe] select :: [(Float, a)] -> a -- Weighted stochastic selection - help?

[C.M.Brown]

Some Monads (such as State and IO) allow side effects and are
therefore not pure.

HTH,
Chris.


On Fri, 5 Sep 2008, Andrew Wagner wrote:

> [snip]
> ... in a purely functional way, i.e. no monads.
> [snip]
>
> Err, what? Monads aren't purely functional?
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