Sujet : Re: CAR/CDR vs FIRST/REST
De : No_spamming (at) *nospam* noWhere_7073.org (B. Pym)
Groupes : comp.lang.lispDate : 02. Jul 2024, 23:33:23
Autres entêtes
Organisation : A noiseless patient Spider
Message-ID : <v61rmv$1q5l1$1@dont-email.me>
User-Agent : XanaNews/1.18.1.6
Barry Margolin wrote:
(mapcan #'(lambda (x) (and (numberp x) (list x))) list)
(loop for x in list
when (numberp x) collect x)
I agree with this example. Once I learned LOOP I never used the
above idiom again.
(filter number? '(a b c 1 2 3))
===>
(1 2 3)
Re: CAR/CDR vs FIRST/REST
Re: CAR/CDR vs FIRST/REST