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

[Albert Y. C. Lai]

Cetin Sert wrote:
> main = do
>   as <- getArgs
[...]
>   where
>     lo = read $ as !! 0
>     hi = read $ as !! 1
>     tx =        as !! 2
> 
> Why is as not visible in the where block?

The where-block is outside the do-block. (Indentation cannot change that 
fact.)