mv.lua

-- A easy to use multiple-return-value is equivalent of having
-- an automatic packing & unpacking mechanism of the functions'
-- input & output.

function mv(n)
   if n == 0 then
      return
   else
      return n, mv(n - 1)
   end
end

-- See the equivalent code in Scheme:
--
-- (define (mv ls)
--   (let ((n (car ls)))
--     (if (zero? n)
--         '()
--         (cons n (mv (list (- n 1)))))))