From: Stefan Monnier <monnier@iro.umontreal.ca>
To: Tomas Hlavaty <tom@logand.com>
Cc: emacs-devel@gnu.org
Subject: Re: named-let
Date: Sat, 09 Jan 2021 11:44:57 -0500 [thread overview]
Message-ID: <jwv1reuf4ip.fsf-monnier+emacs@gnu.org> (raw)
In-Reply-To: <87im86kub6.fsf@logand.com> (Tomas Hlavaty's message of "Sat, 09 Jan 2021 16:23:57 +0100")
>> But with the recent tail-call optimization I installed into `master`,
>> the above `my-length` now works without eating up stack space.
> That's great news.
Probably not as great as you think.
> Is TCO always used (like in Scheme) or in which cases is it used or not used?
It's basically never used. It's only applied for the particular case of
tail recursive calls to functions defined by `cl-labels` and only for
those calls that are "self-recursive" (i.e. come from within the code of
that function).
> Is it possible to turn it on or off?
No.
Stefan
next prev parent reply other threads:[~2021-01-09 16:44 UTC|newest]
Thread overview: 28+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-01-09 1:43 named-let Stefan Monnier
2021-01-09 8:58 ` named-let tomas
2021-01-09 16:01 ` named-let Joost Kremers
2021-01-09 21:48 ` named-let Stefan Monnier
2021-01-09 15:23 ` named-let Tomas Hlavaty
2021-01-09 16:44 ` Stefan Monnier [this message]
2021-01-09 17:03 ` named-let Helmut Eller
2021-01-09 18:43 ` named-let Stefan Monnier
2021-01-09 18:47 ` named-let Tomas Hlavaty
2021-01-10 18:49 ` named-let Zhu Zihao
2021-01-11 22:27 ` named-let Tomas Hlavaty
2021-01-11 22:36 ` named-let Stefan Monnier
2021-01-11 22:48 ` named-let Tomas Hlavaty
2021-01-11 22:50 ` named-let Andrea Corallo via Emacs development discussions.
2021-01-11 23:10 ` named-let Stefan Monnier
2021-01-11 23:28 ` named-let Andrea Corallo via Emacs development discussions.
2021-01-11 23:57 ` named-let Stefan Monnier
2021-01-12 9:24 ` named-let Andrea Corallo via Emacs development discussions.
2021-01-12 18:07 ` named-let Stefan Monnier
2021-01-12 18:50 ` named-let Andrea Corallo via Emacs development discussions.
2021-01-12 9:13 ` named-let Helmut Eller
2021-01-13 8:11 ` named-let Zhu Zihao
2021-01-13 14:01 ` named-let Stefan Monnier
2021-01-11 22:40 ` named-let Andrea Corallo via Emacs development discussions.
2021-01-11 22:51 ` named-let Tomas Hlavaty
2021-01-11 23:04 ` named-let Andrea Corallo via Emacs development discussions.
2021-01-12 0:12 ` named-let Tomas Hlavaty
2021-01-20 19:44 ` named-let Stefan Monnier
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