unofficial mirror of help-gnu-emacs@gnu.org
 help / color / mirror / Atom feed
From: Drew Adams <drew.adams@oracle.com>
To: Noam Postavsky <npostavs@gmail.com>, Christopher Dimech <dimech@gmx.com>
Cc: Help Gnu Emacs <help-gnu-emacs@gnu.org>
Subject: RE: Cycle Org Shift Select
Date: Tue, 10 Nov 2020 08:37:26 -0800 (PST)	[thread overview]
Message-ID: <dbbb4f43-594a-4563-9525-fd99526b6b60@default> (raw)
In-Reply-To: <CAM-tV-8gVKeGSofba+2ARFE2ZPbBmMvZD7qe0CQdVr2hibGxsQ@mail.gmail.com>

> (defun Org-Shftsel-Cycle ()
>   (interactive)
>   (setq org-support-shift-select
>         (cadr (memq org-support-shift-select '(nil t always nil)))))


Elegant Lisp, IMO!  A good idiom.
___


Slightly cuter: the last nil isn't needed, since (car nil) = nil.

(defvar toto nil)

(defun foo ()
  (interactive)
  (setq toto  (cadr (memq toto '(nil t always))))
  (message "NOW: %s" toto))

Of if you want to show also what'll come next:

(defun foo ()
  (interactive)
  (let ((xs  '(nil t always))
        next)
    (setq toto  (cadr (memq toto xs))
          next  (cadr (memq toto xs)))
    (message "NOW: %s, NEXT: %s" toto next)))



  parent reply	other threads:[~2020-11-10 16:37 UTC|newest]

Thread overview: 28+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2020-11-06 15:23 Cycle Org Shift Select Christopher Dimech
2020-11-09 19:12 ` Noam Postavsky
2020-11-09 20:13   ` Michael Heerdegen
2020-11-09 20:26     ` Noam Postavsky
2020-11-09 20:31       ` Michael Heerdegen
2020-11-09 20:37         ` Noam Postavsky
2020-11-09 21:08           ` Michael Heerdegen
2020-11-09 21:19             ` Noam Postavsky
2020-11-09 20:40     ` Christopher Dimech
2020-11-09 20:42       ` Noam Postavsky
2020-11-09 20:52         ` Christopher Dimech
2020-11-09 20:53           ` Noam Postavsky
2020-11-09 21:20             ` Michael Heerdegen
2020-11-09 21:25               ` Noam Postavsky
2020-11-09 21:36                 ` Michael Heerdegen
2020-11-09 21:45             ` Christopher Dimech
2020-11-09 21:49               ` Noam Postavsky
2020-11-09 21:50               ` Michael Heerdegen
2020-11-09 21:59                 ` Christopher Dimech
2020-11-09 22:49       ` Christopher Dimech
2020-11-10  8:08         ` tomas
2020-11-10 10:17           ` Christopher Dimech
2020-11-10 11:10             ` Michael Heerdegen
2020-11-10 16:37   ` Drew Adams [this message]
2020-11-11 17:09     ` Drew Adams
2020-11-09 20:10 ` Michael Heerdegen
2020-11-09 20:35   ` Christopher Dimech
2020-11-09 21:18     ` Michael Heerdegen

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=dbbb4f43-594a-4563-9525-fd99526b6b60@default \
    --to=drew.adams@oracle.com \
    --cc=dimech@gmx.com \
    --cc=help-gnu-emacs@gnu.org \
    --cc=npostavs@gmail.com \
    /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).