From: Drew Adams <drew.adams@oracle.com>
To: Stephen Berman <stephen.berman@gmx.net>, help-gnu-emacs@gnu.org
Subject: RE: count char in string [The Emacs Challenge Competition - round 2, with fallout]
Date: Thu, 29 Oct 2020 09:13:55 -0700 (PDT) [thread overview]
Message-ID: <a45e295e-856b-4a66-9042-b3b2d37885d4@default> (raw)
In-Reply-To: <87k0v9fhbi.fsf@rub.de>
> cl-count? seq-count? seq-reduce? KISS!
>
> (defun count-char-in-string (char str)
> "Return number of occurrences of character CHAR in string STR."
> (let ((count 0))
> (dotimes (i (length str) count)
> (when (eq char (aref str i))
> (setq count (1+ count))))))
+1.
Or just (cl-incf count) at the end, if you're
loading `cl-lib.el' anyway, for other reasons.
next prev parent reply other threads:[~2020-10-29 16:13 UTC|newest]
Thread overview: 16+ messages / expand[flat|nested] mbox.gz Atom feed top
2020-10-28 0:42 count char in string [The Emacs Challenge Competition - round 2, with fallout] Emanuel Berg via Users list for the GNU Emacs text editor
2020-10-28 8:04 ` Corwin Brust
2020-10-28 17:19 ` Noam Postavsky
2020-10-29 1:15 ` Corwin Brust
2020-11-29 3:44 ` Emanuel Berg via Users list for the GNU Emacs text editor
2020-11-28 1:26 ` Emanuel Berg via Users list for the GNU Emacs text editor
2020-11-28 17:40 ` Benjamín Buccianti
2020-10-29 1:46 ` Benjamín Buccianti
2020-10-29 10:38 ` Stephen Berman
2020-10-29 16:13 ` Drew Adams [this message]
2020-10-29 13:53 ` Patrick McAllister
2020-10-29 17:52 ` Leo Butler
2020-10-29 22:44 ` Jean Louis
2020-10-30 11:09 ` Leo Butler
2020-10-30 11:36 ` Joost Kremers
2020-10-30 11:53 ` Jean Louis
Reply instructions:
You may reply publicly to this message via plain-text email
using any one of the following methods:
* Save the following mbox file, import it into your mail client,
and reply-to-all from there: mbox
Avoid top-posting and favor interleaved quoting:
https://en.wikipedia.org/wiki/Posting_style#Interleaved_style
List information: https://www.gnu.org/software/emacs/
* Reply using the --to, --cc, and --in-reply-to
switches of git-send-email(1):
git send-email \
--in-reply-to=a45e295e-856b-4a66-9042-b3b2d37885d4@default \
--to=drew.adams@oracle.com \
--cc=help-gnu-emacs@gnu.org \
--cc=stephen.berman@gmx.net \
/path/to/YOUR_REPLY
https://kernel.org/pub/software/scm/git/docs/git-send-email.html
* If your mail client supports setting the In-Reply-To header
via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line
before the message body.
This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox;
as well as URLs for read-only IMAP folder(s) and NNTP newsgroup(s).