Hi Lyndon, Since the example immediately above the exercise used randomRIO, I assumed that randomRIO was to be used as part of the solution to the exercise.
http://en.wikibooks.org/wiki/Haskell/Understanding_monads/State Also, it was the above mentioned example that introduced me to *liftM2*, about which I posted a question a couple of days ago (subject line: Heavy lift-ing). The next topic on the wiki page is "Getting Rid of the IO" which seems to be the direction of your post. No doubt I'll have more questions as I plod on. Thanks for your input, Michael --- On Mon, 7/26/10, Lyndon Maydwell <maydw...@gmail.com> wrote: From: Lyndon Maydwell <maydw...@gmail.com> Subject: Re: [Haskell-cafe] Random this! ;-) To: "michael rice" <nowg...@yahoo.com> Cc: "Max Rabkin" <max.rab...@gmail.com>, "Ozgur Akgun" <ozgurak...@gmail.com>, haskell-cafe@haskell.org Date: Monday, July 26, 2010, 8:29 AM I find it useful to have a seed argument to nearly all random functions rather than using ones with an IO signature. This way you can speed up your program quite a bit and also make testing much easier. I think that MonadRandom does this automatically too.
_______________________________________________ Haskell-Cafe mailing list Haskell-Cafe@haskell.org http://www.haskell.org/mailman/listinfo/haskell-cafe
