From: Drew Adams <drew.adams@oracle.com>
To: Eli Zaretskii <eliz@gnu.org>, Drew Adams <drew.adams@oracle.com>
Cc: contovob@tcd.ie, eggert@cs.ucla.edu, emacs-devel@gnu.org
Subject: RE: Predicate for true lists
Date: Fri, 6 Jul 2018 11:00:43 -0700 (PDT) [thread overview]
Message-ID: <95fda70b-5893-4788-83c5-a0bb5d708304@default> (raw)
In-Reply-To: <<83601sl0wo.fsf@gnu.org>>
> > > Do we really want this usage of the function as a predicate? I find
> > > this slightly unnatural, and also not future-proof enough, because
> > > you rely on the checks 'length' does internally. If the internals of
> > > 'length' change one day, this predicate usage will collapse like a
> > > house of cards. Would it make more sense to have a separate
> > > predicate?
> >
> > IIRC, the main motivation for adding this function was
> > to provide a predicate for testing properness.
>
> Then I'd prefer calling the function proper-list-p (and returning the
> list length when it's a proper list) than the other way around.
Then discoverability of the use for length is reduced.
Just define it once (one function), using whichever name
is preferred, AND alias the other name to the same function.
That will help users discover it for both uses.
And of course the doc string should point out both uses.
next prev parent reply other threads:[~2018-07-06 18:00 UTC|newest]
Thread overview: 100+ messages / expand[flat|nested] mbox.gz Atom feed top
2018-04-16 19:34 Predicate for true lists Basil L. Contovounesios
2018-06-04 12:12 ` Basil L. Contovounesios
2018-06-04 14:08 ` Stefan Monnier
2018-06-04 14:46 ` Basil L. Contovounesios
2018-06-04 15:31 ` Drew Adams
2018-06-04 16:14 ` Basil L. Contovounesios
2018-06-04 16:38 ` Drew Adams
2018-06-04 16:57 ` Stefan Monnier
2018-06-05 1:23 ` Paul Eggert
2018-06-05 2:57 ` Drew Adams
2018-06-05 3:08 ` Drew Adams
2018-06-05 3:12 ` Drew Adams
2018-06-05 3:25 ` Drew Adams
2018-06-05 15:05 ` Basil L. Contovounesios
2018-06-06 7:42 ` Paul Eggert
2018-06-06 9:40 ` Van L
2018-06-06 13:44 ` Stefan Monnier
2018-06-06 17:40 ` Stefan Monnier
2018-06-07 7:03 ` Van L
2018-07-05 22:31 ` Basil L. Contovounesios
2018-07-06 5:57 ` Eli Zaretskii
2018-07-06 17:16 ` Drew Adams
2018-07-06 17:38 ` Eli Zaretskii
[not found] ` <<83601sl0wo.fsf@gnu.org>
2018-07-06 18:00 ` Drew Adams [this message]
2018-07-07 6:54 ` Eli Zaretskii
[not found] ` <<<83601sl0wo.fsf@gnu.org>
[not found] ` <<95fda70b-5893-4788-83c5-a0bb5d708304@default>
[not found] ` <<8336wvleml.fsf@gnu.org>
2018-07-07 14:42 ` Drew Adams
2018-07-06 18:04 ` Paul Eggert
2018-07-07 6:58 ` Eli Zaretskii
2018-07-07 7:20 ` martin rudalics
2018-07-07 8:41 ` Paul Eggert
2018-07-07 10:04 ` Eli Zaretskii
2018-07-07 15:04 ` Basil L. Contovounesios
2018-07-07 16:12 ` Eli Zaretskii
2018-07-07 16:52 ` Basil L. Contovounesios
2018-07-07 17:07 ` Eli Zaretskii
2018-07-07 17:14 ` Paul Eggert
2018-07-07 17:34 ` Eli Zaretskii
2018-07-08 0:15 ` Drew Adams
2018-07-08 4:48 ` Paul Eggert
2018-07-08 15:15 ` Drew Adams
2018-07-08 16:00 ` Paul Eggert
2018-07-08 17:42 ` Drew Adams
2018-07-08 17:47 ` Paul Eggert
2018-07-07 17:06 ` Basil L. Contovounesios
2018-07-09 19:25 ` Basil L. Contovounesios
2018-07-09 19:40 ` Basil L. Contovounesios
2018-07-10 2:02 ` Paul Eggert
2018-07-10 5:46 ` Basil L. Contovounesios
2018-07-11 3:02 ` Paul Eggert
2018-07-11 6:27 ` Basil L. Contovounesios
2018-07-15 22:55 ` Wilfred Hughes
2018-07-16 1:37 ` Paul Eggert
2018-07-11 14:01 ` [Emacs-diffs] master babe0d4: Rearrange definition of zerop in subr.el Karl Fogel
2018-07-11 17:12 ` Basil L. Contovounesios
2018-07-11 17:33 ` Paul Eggert
2018-07-12 15:34 ` Basil L. Contovounesios
2018-07-12 15:43 ` Basil L. Contovounesios
2019-04-09 12:51 ` Predicate for true lists Basil L. Contovounesios
2019-04-09 15:33 ` Stefan Monnier
2019-04-09 16:20 ` Basil L. Contovounesios
2019-04-09 16:32 ` Stefan Monnier
2019-04-09 16:54 ` Daniel Colascione
2019-04-09 17:27 ` Basil L. Contovounesios
2019-04-09 17:27 ` Basil L. Contovounesios
2019-04-09 20:08 ` Unused value of error-free function warning (was: Predicate for true lists) Basil L. Contovounesios
2019-04-09 20:40 ` Unused value of error-free function warning Stefan Monnier
2019-04-09 20:12 ` Predicate for true lists Basil L. Contovounesios
2019-04-09 20:41 ` Stefan Monnier
2019-04-10 2:32 ` Eli Zaretskii
2019-04-10 14:16 ` Alex Branham
2019-04-10 14:34 ` Basil L. Contovounesios
2019-04-10 15:01 ` Drew Adams
2019-04-10 15:45 ` Basil L. Contovounesios
2019-04-10 16:04 ` Eli Zaretskii
2019-04-17 17:56 ` Basil L. Contovounesios
2019-04-17 18:11 ` Stefan Monnier
2019-04-21 21:42 ` Basil L. Contovounesios
2019-04-17 18:55 ` Drew Adams
2019-04-21 21:24 ` Basil L. Contovounesios
2019-04-22 0:03 ` Drew Adams
2019-04-22 1:12 ` Michael Heerdegen
2019-04-22 9:39 ` Drew Adams
2019-04-18 14:37 ` Eli Zaretskii
2019-04-21 18:30 ` Basil L. Contovounesios
2019-04-21 19:39 ` Eli Zaretskii
2019-04-21 21:37 ` Basil L. Contovounesios
2019-04-22 0:06 ` Drew Adams
2019-04-22 7:49 ` Eli Zaretskii
2019-04-22 12:59 ` Basil L. Contovounesios
2019-04-22 13:12 ` Eli Zaretskii
2019-04-22 15:19 ` Basil L. Contovounesios
2019-04-21 19:41 ` Eli Zaretskii
2019-04-21 21:41 ` Basil L. Contovounesios
2019-04-22 6:39 ` Eli Zaretskii
2019-04-22 12:58 ` Basil L. Contovounesios
2018-07-06 17:00 ` Drew Adams
2018-07-06 17:20 ` Paul Eggert
2018-07-06 17:33 ` Eli Zaretskii
2018-07-08 22:38 ` Basil L. Contovounesios
2018-07-06 17:30 ` Paul Eggert
[not found] <<<87fu3vdjjk.fsf@tcd.ie>
[not found] <<87fu3vdjjk.fsf@tcd.ie>
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=95fda70b-5893-4788-83c5-a0bb5d708304@default \
--to=drew.adams@oracle.com \
--cc=contovob@tcd.ie \
--cc=eggert@cs.ucla.edu \
--cc=eliz@gnu.org \
--cc=emacs-devel@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.
Code repositories for project(s) associated with this public inbox
https://git.savannah.gnu.org/cgit/emacs.git
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).