Re: [Haskell-cafe] Random this! ;-)

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 wrote: From: Lyndon Maydwell Subject: Re: [Haskell-cafe] Random this! ;-) To: "michael rice" Cc: "Max Rabkin" , "Ozgur Akgun" , 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.