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From: "B. Pym" <Nobody447095@here-nor-there.org>
Newsgroups: comp.lang.lisp
Subject: re: lisp newbie here
Date: Sun, 14 Jul 2024 09:41:55 -0000 (UTC)
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Alex Mizrahi wrote:

> in kmrcl package you can find such implementations: 
> 
> (defun alist-plist (alist) 
>   (apply #'append (mapcar #'(lambda (x) (list (car x) (cdr x))) alist)))

Did you see the idiocy?
  #'(lambda

Lambda is a macro that expands to (function (lambda ...)).
Users of CL are extremely eager to produce the
ugliest code possible.


Gauche Scheme

(define (alist->plist alist) 
  (append-map
    list
    (map car alist)
    (map cdr alist)))


Another way:

(use util.match)

(define (alist->plist alist) 
  (match alist
    [((k . v) ...)
      (append-map list k v)]))