Re: [Haskell-cafe] random colors, stack space overflow, mersenne and mersenne.pure64

13 Sep 2008

      cetin.sert:
...
main :: IO ()
   main = do
     as <- getArgs
     mt <- newPureMT
     let colors = randomRs (lo,hi) mt :: [RGB]
     print $ zip tx cs
     where
       lo = read $ as !! 0
       hi = read $ as !! 1
       tx =        as !! 2
   Why is as not visible in the where block?
Same as:

     main =
       let
         lo = read $ as !! 0
         hi = read $ as !! 1
         tx =        as !! 2
       in do
         as <- getArgs
         mt <- newPureMT
         let colors = randomRs (lo,hi) mt :: [RGB]
         print $ zip tx cs

If that helps think about when things are bound.

-- Don

Re: [Haskell-cafe] random colors, stack space overflow, mersenne and mersenne.pure64

Don Stewart