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Thank you very much!<br>
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<div class="moz-cite-prefix">On 4/17/15 6:48 PM, Mike Meyer wrote:<br>
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cite="mid:CAD=7U2AN-h2HSZMBDa0HDL4wmNN1TpbLmuVe4oCXz15hKSA+sA@mail.gmail.com"
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<div class="gmail_quote">On Fri, Apr 17, 2015 at 2:25 PM,
Thomas Jakway <span dir="ltr"><<a moz-do-not-send="true"
href="mailto:tjakway@nyu.edu" target="_blank">tjakway@nyu.edu</a>></span>
wrote:<br>
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<div bgcolor="#FFFFFF" text="#000000">genThree listMax =
do --highest index in the list<br>
let listMin = 0 :: Int --lowest index in the
list<br>
generatedMin <- state randomR (listMin,
listMax)<br>
return generatedMin<br>
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What you're missing is a $:</div>
<div class="gmail_extra"><br>
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<div class="gmail_extra">The only chagne to our genThree
functions is making it "state $" instead of "state". </div>
<div class="gmail_extra"><br>
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<div class="gmail_extra"><br>
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<div class="gmail_extra">#!/usr/bin/env runhaskell</div>
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<div class="gmail_extra">import System.Random</div>
<div class="gmail_extra">import Control.Monad.State</div>
<div class="gmail_extra"><br>
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<div class="gmail_extra">genThree listMax = do --highest index
in the list<br>
</div>
<div class="gmail_extra"> let listMin = 0 :: Int
--lowest index in the list</div>
<div class="gmail_extra"> generatedMin <- state $
randomR (listMin, listMax)</div>
<div class="gmail_extra"> return generatedMin</div>
<div class="gmail_extra"><br>
</div>
<div class="gmail_extra">main = do<br>
</div>
<div class="gmail_extra"> gen <- newStdGen</div>
<div class="gmail_extra"> print $ evalState (genThree 10) gen</div>
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