[Haskell-cafe] elemt from list

Christian Maeder maeder at tzi.de
Tue Jan 27 11:09:27 EST 2004

The pattern "[x]" only matches singleton lists.

Pajo Patak wrote:
> I want  to return a list, from and list of lists (all integers), where 
> is the erroe in the code?
> nthList :: [[a]] -> Int -> [a]
> nthList ([x]:xs) 1     = [x]
> nthList ([x]:xs) (n+1) = nthListh xs n

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