Re: Undefined in LISP

Liste des GroupesRevenir à cl lisp 
Sujet : Re: Undefined in LISP
De : ldo (at) *nospam* nz.invalid (Lawrence D'Oliveiro)
Groupes : comp.lang.lisp
Date : 24. Mar 2025, 00:32:16
Autres entêtes
Organisation : A noiseless patient Spider
Message-ID : <vrq5m0$3gje1$2@dont-email.me>
References : 1 2 3 4 5
User-Agent : Pan/0.162 (Pokrosvk)
On Sun, 23 Mar 2025 16:56:35 +0000, Daniel Cerqueira wrote:

Does every LISP S-expression need to have a value (need to be
evaluated)?  Is atributing a symbol to undefined behaviour needed?

Which is why I said, the natural way to have an “undefined” value is for
the computation not to terminate at all.

Date Sujet#  Auteur
21 Mar 25 * Undefined in LISP22Daniel Cerqueira
22 Mar 25 +- Re: Undefined in LISP1Jeff Barnett
22 Mar 25 +- Re: Undefined in LISP1Alan Bawden
22 Mar 25 +- Re: Undefined in LISP1Kaz Kylheku
22 Mar 25 +* Re: Undefined in LISP15Lawrence D'Oliveiro
22 Mar 25 i`* Re: Undefined in LISP14Daniel Cerqueira
22 Mar 25 i `* Re: Undefined in LISP13Lawrence D'Oliveiro
23 Mar 25 i  `* Re: Undefined in LISP12Daniel Cerqueira
23 Mar 25 i   +- Re: Undefined in LISP1Jeff Barnett
24 Mar 25 i   +* Re: Undefined in LISP9Lawrence D'Oliveiro
24 Mar 25 i   i+* Re: Undefined in LISP3Kaz Kylheku
24 Mar 25 i   ii+- Re: Undefined in LISP1Paul Rubin
24 Mar 25 i   ii`- txr [was Re: Undefined in LISP1Madhu
24 Mar 25 i   i`* Re: Undefined in LISP5Daniel Cerqueira
24 Mar 25 i   i `* Re: Undefined in LISP4Lawrence D'Oliveiro
27 Mar 25 i   i  `* Re: Undefined in LISP3Robert Girault
29 Mar 25 i   i   `* Re: Undefined in LISP2Daniel Cerqueira
29 Mar 25 i   i    `- Re: Undefined in LISP1Lawrence D'Oliveiro
22 Apr 25 i   `- Re: Undefined in LISP1Kevin J Witczak
22 Mar 25 `* Re: Undefined in LISP3Paul Rubin
23 Mar 25  `* Re: Undefined in LISP2Stefan Ram
24 Mar 25   `- Re: Undefined in LISP1Lawrence D'Oliveiro

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