Sujet : Re: I still don't get MAPCAN
De : Nobody447095 (at) *nospam* here-nor-there.org (B. Pym)
Groupes : comp.lang.lispDate : 27. Jun 2025, 00:32:38
Autres entêtes
Organisation : A noiseless patient Spider
Message-ID : <103klal$3nt25$1@dont-email.me>
References : 1
User-Agent : XanaNews/1.18.1.6
B. Pym wrote:
(mapcan (lambda (e) (if (interestingp e) (list e) nil)) huge-list))
Shorter:
(mapcan (lambda (e) (and (interestingp e) (list e))) huge-list))