[Haskell-cafe] Ultra-newbie Question

[Nils Schweinsberg]

Am 18.09.2010 09:51, schrieb Christopher Tauss:
> I am trying to write a function that takes a list and returns the last n
> elements.

last_n n = fst . foldr step ([], n)
   where
     step _ (xs, 0) = (xs, 0)
     step x (xs, n) = (x:xs, n-1)