From: Stefan Monnier <monnier@iro.umontreal.ca>
To: emacs-devel@gnu.org
Subject: Re: Why is there no `until' in elisp?
Date: Fri, 19 Oct 2018 11:28:02 -0400 [thread overview]
Message-ID: <jwvin1yt0uj.fsf-monnier+gmane.emacs.devel@gnu.org> (raw)
In-Reply-To: 877eihbt1y.fsf@ericabrahamsen.net
> I have nothing to do with this, but my feeling is that Lisp developers
> in general drag their feet about adding trivial/obvious constructs to
> the standard library. As your footnote makes clear, it's a two-line code
> addition to make `until' work. There are different schools of thought
> about this: one that says "why?", and one that says "why not"? The "why
> not"s contribute to subr.el and subr-x.el :)
Personally, I grew fond of `until` and wanted to add it (even went to
the trouble of writing the corresponding byte-compiler code), but really
in 99% of the cases, you can just negate the test so the benefit
in minuscule. But if we could go back in time, then I would definitely
replace `while` with `until`.
Stefan
next prev parent reply other threads:[~2018-10-19 15:28 UTC|newest]
Thread overview: 26+ messages / expand[flat|nested] mbox.gz Atom feed top
2018-10-16 17:42 Why is there no `until' in elisp? Garreau, Alexandre
2018-10-16 19:16 ` Eric Abrahamsen
2018-10-16 19:31 ` Garreau, Alexandre
2018-10-16 20:23 ` Eric Abrahamsen
2018-10-16 23:00 ` Garreau, Alexandre
2018-10-19 15:28 ` Stefan Monnier [this message]
2018-10-16 21:28 ` Stefan Monnier
2018-10-17 0:12 ` Garreau, Alexandre
2018-10-17 2:04 ` Stefan Monnier
2018-10-17 9:14 ` Garreau, Alexandre
2018-10-17 15:06 ` Stefan Monnier
2018-10-17 16:51 ` Garreau, Alexandre
2018-10-19 15:34 ` Stefan Monnier
2018-10-19 18:08 ` Garreau, Alexandre
2018-10-17 8:04 ` Yuri Khan
2018-10-17 9:23 ` Garreau, Alexandre
2018-10-17 9:46 ` Yuri Khan
2018-10-17 11:06 ` Garreau, Alexandre
2018-10-17 17:50 ` Paul Eggert
2018-10-17 21:15 ` Garreau, Alexandre
2018-10-17 21:35 ` Paul Eggert
2018-10-17 21:49 ` Garreau, Alexandre
2018-10-17 22:33 ` Paul Eggert
2018-10-17 22:54 ` Garreau, Alexandre
2018-10-17 12:41 ` Elias Mårtenson
2018-10-17 15:03 ` Stefan Monnier
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