Alex Gontcharov wrote:

Ignore the layout

pStack needs to be indented to the same level than digStack (or a "where" must be inserted after digStack).

I can't find the error, running it gives parse error during compile on pStack, it is not very descriptive and I don't what is wrong.

after correct indentation, the error message of ghc is quite accurate: Couldn't match `[Integer]' against `Integer -> [Integer]' Expected type: [Integer] Inferred type: Integer -> [Integer] Probable cause: `pStack' is applied to too few arguments in the call (pStack xs) In the second argument of `(++)', namely `pStack xs'

--Stack for the digits for numbers, a modulo b digStack :: Integer->Integer->[Integer] digStack a b | a == 0 = [] | otherwise = (mod a b):(digStack (div a b) b)

--Takes a list of remainders and pStack :: [Integer] -> Integer -> [Integer] pStack [] _ = [] pStack (x:xs) a = digStack x a ++ pStack xs

the last expression should probably be "pStack xs a"

I think I will never like Haskell :-)

Come on, Christian