14. Multiple returns

Leer en español

If your goal is to return multiple values from a function, you can use values:

(defun tabla (n)
  (values n (* n 2) (* n 3)))

We will return a tuple with the number, its double, and its triple.

* (tabla 5)
(5 10 15)

It is not a list, but multiple returned values.

* (multiple-value-list (tabla 5))
(5 10 15)

* (nth-value 1 (tabla 5))
10

* (first (multiple-value-list (tabla 5)))
5

* (car (last (multiple-value-list (tabla 5))))
15

This work is under a Attribution-NonCommercial-NoDerivatives 4.0 International license.

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