[Haskell-beginners] safetail problem

[Christian Maeder]

Am 13.07.2011 18:31, schrieb Roelof Wobben:
> Oke,
>
> Then I made there a error.
> I want to check if xs is a empty list.
> So it must be if null xs then [] else xs

  "if null xs then [] else xs" still identical to "xs"

C.