From: Heime <heimeborgia@protonmail.com>
To: Heime via Users list for the GNU Emacs text editor
<help-gnu-emacs@gnu.org>
Subject: Defaulting optional numeric and string arguments
Date: Thu, 12 Sep 2024 17:39:50 +0000 [thread overview]
Message-ID: <t6ia3DSNEL_LDm6VVf6Y61S9lGTj6nrMeqF0b9SdM3EWiK82UxFaqE408gmEoFMuNQrbna-oEPkFI0M0whTjMzsJTu82Ih10XK0dkyeD7mA=@protonmail.com> (raw)
I have an optional numeric argument n passed to a function.
Am having difficulty setting a default for it to cater for both the
interactive and non-interactive cases.
Is the below how to do it ?
(setq n (if (or (not n) (not numberp n)) 0 n))
I also have an optional string bfrn, to which I am using
(setq bfrn (if (or (not bfrn) (string= bfrn "")) "Context" bfrn))
next reply other threads:[~2024-09-12 17:39 UTC|newest]
Thread overview: 5+ messages / expand[flat|nested] mbox.gz Atom feed top
2024-09-12 17:39 Heime [this message]
2024-09-12 19:17 ` Defaulting optional numeric and string arguments Stefan Monnier via Users list for the GNU Emacs text editor
2024-09-12 20:00 ` Heime
2024-09-12 20:18 ` Stefan Monnier
2024-09-12 20:29 ` Heime
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='t6ia3DSNEL_LDm6VVf6Y61S9lGTj6nrMeqF0b9SdM3EWiK82UxFaqE408gmEoFMuNQrbna-oEPkFI0M0whTjMzsJTu82Ih10XK0dkyeD7mA=@protonmail.com' \
--to=heimeborgia@protonmail.com \
--cc=help-gnu-emacs@gnu.org \
/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).