17 Apr
2015
17 Apr
'15
6:48 p.m.
On Fri, Apr 17, 2015 at 2:25 PM, Thomas Jakway
genThree listMax = do --highest index in the list let listMin = 0 :: Int --lowest index in the list generatedMin <- state randomR (listMin, listMax) return generatedMin
What you're missing is a $: The only chagne to our genThree functions is making it "state $" instead of "state". #!/usr/bin/env runhaskell import System.Random import Control.Monad.State genThree listMax = do --highest index in the list let listMin = 0 :: Int --lowest index in the list generatedMin <- state $ randomR (listMin, listMax) return generatedMin main = do gen <- newStdGen print $ evalState (genThree 10) gen