Re: Multivalue tail recursion?

Kaz Kylheku <643-408-1753@kylheku.com> writes:

   > Scheme:
   >
   > (filter-map
   >   (lambda xs (and (apply = xs) xs))

   What's wrong with (if (apply = xs) xs)?

In Scheme, (if #F whatever) is undefined, while (and #F whatever) is #F.

At least that's the way it was in R5RS.  I don't have a more recent
version of the specification handy.

(Meanwhile in Common Lisp, (if nil whatever) is nil.)

(Kaz: Why are you wasting your time replying to this junk?)