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Failed to connect to MySQL: (1203) User howardkn already has more than 'max_user_connections' active connectionsPath: ...!2.eu.feeder.erje.net!feeder.erje.net!eternal-september.org!feeder3.eternal-september.org!news.eternal-september.org!.POSTED!not-for-mail From: Bozo User Newsgroups: rec.puzzles Subject: Re: Lis(t|p) comprehensions Date: Wed, 11 Sep 2024 07:04:45 -0000 (UTC) Organization: A noiseless patient Spider Lines: 27 Message-ID: References: Injection-Date: Wed, 11 Sep 2024 09:04:45 +0200 (CEST) Injection-Info: dont-email.me; posting-host="1ea0bff56ac37c439d06cfe74accd437"; logging-data="3659347"; mail-complaints-to="abuse@eternal-september.org"; posting-account="U2FsdGVkX18Opa+b/grEIPCKnjRE2w5Q" User-Agent: slrn/1.0.3 (Linux) Cancel-Lock: sha1:Km+gdg6Lr7aDK2W5oMjFY4kIwhQ= Bytes: 1417 On 2024-09-08, B. Pym wrote: >> > CL-USER> [x (x <- '(1 2 3)) (oddp x)] >> > (1 3) >> > >> CL-USER> (loop for x in (list 1 2 3) when (oddp x) collect x) >> (1 3) >> >> LOOP does some kind of list comprehension aswell, without an additional >> software. > > Scheme: > > (filter odd? '(3 4 5)) > ===> > (3 5) > > Does using CL cripple the brain, or does having a crippled brain > cause one to use CL? > > If Lisp is to live, CL must die. > (defun filter (func lst) (remove-if-not func lst)) ( filter #'oddp '(3 4 5 )) (3 5)