GNU bug report logs - #58278
Add new function seq-keep

Previous Next

Package: emacs;

Reported by: Jonas Bernoulli <jonas <at> bernoul.li>

Date: Mon, 3 Oct 2022 21:31:02 UTC

Severity: normal

Fixed in version 29.1

Done: Lars Ingebrigtsen <larsi <at> gnus.org>

Bug is archived. No further changes may be made.

Full log

View this message in rfc822 format

From: Lars Ingebrigtsen <larsi <at> gnus.org>
To: Robert Pluim <rpluim <at> gmail.com>
Cc: 58278 <at> debbugs.gnu.org, Jonas Bernoulli <jonas <at> bernoul.li>
Subject: bug#58278: Add new function seq-keep
Date: Tue, 04 Oct 2022 12:42:50 +0200

Robert Pluim <rpluim <at> gmail.com> writes:

> Well, cl-mapcan applies a function to the elements of a sequence and
> discards 'nil' results. Looks pretty similar to me.

No, it concatenates the results, so the values returned by the function
has to be lists.

But, yes, if you return lists, then nil return values will "disappear".
This bug report was last modified 2 years and 270 days ago.

Previous Next

GNU bug tracking system
Copyright (C) 1999 Darren O. Benham, 1997,2003 nCipher Corporation Ltd, 1994-97 Ian Jackson.