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 : 22. Mar 2025, 04:25:42
Autres entêtes
Organisation : A noiseless patient Spider
Message-ID : <vrlajl$2uuho$2@dont-email.me>
References : 1
User-Agent : Pan/0.162 (Pokrosvk)
On Fri, 21 Mar 2025 22:47:38 +0000, Daniel Cerqueira wrote:

I would like to know your thoughts, about what being undefined actually
is. Should an undefined expression be represented by a symbol, or should
an undefined expression be silent (without returning a symbol)?

Should an attempt to evaluate such an expression even terminate?

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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