rotten news relay - comp.lang.scheme - Re: A Long Piece Of Lisp Code

Subject: Re: A Long Piece Of Lisp Code
From: B. Pym
Newsgroups: comp.lang.lisp, comp.lang.scheme
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Date: Tue, 17 Sep 2024 11:11 UTC

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From: Nobody447095@here-nor-there.org (B. Pym)
Newsgroups: comp.lang.lisp,comp.lang.scheme
Subject: Re: A Long Piece Of Lisp Code
Date: Tue, 17 Sep 2024 11:11:51 -0000 (UTC)
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> (defun split-if (fn lst)
> (let ((acc nil))
> (do ((src lst (cdr src)))
> ((or (null src) (funcall fn (car src)))
> (values (nreverse acc) src))
> (push (car src) acc))))

Scheme

(define (split-if fn lst)
(do ((src lst (cdr src))
(acc '() (cons (car src) acc)))
((or (null? src) (fn (car src)))
(values (reverse acc) src))))

(split-if odd? '(0 2 4 5 7))
===>
(0 2 4)
(5 7)

(split-if odd? '(0 2 4 52 70))
===>
(0 2 4 52 70)
()

(split-if odd? '(3 0 2 4 52 70))
===>
()
(3 0 2 4 52 70)

Subject	Author
Re: A Long Piece Of Lisp Code	B. Pym

You are as I am with You.

comp / comp.lang.scheme / Re: A Long Piece Of Lisp Code