From: Stefan Monnier <monnier@iro.umontreal.ca>
To: Helmut Eller <eller.helmut@gmail.com>
Cc: emacs-devel@gnu.org
Subject: Re: named-let
Date: Sat, 09 Jan 2021 13:43:44 -0500 [thread overview]
Message-ID: <jwvk0smdkgk.fsf-monnier+emacs@gnu.org> (raw)
In-Reply-To: <m2r1mu11qd.fsf@gmail.com> (Helmut Eller's message of "Sat, 09 Jan 2021 18:03:54 +0100")
> Is there hope for general contification? So that things like
>
> (defun my-even? (x)
> (cl-labels ((even? (x) (or (= x 0) (odd? (1- x))))
> (odd? (x) (or (= x 1) (even? (1- x)))))
> (even? x)))
>
> are translated to a bunch of gotos and no lambdas.
I have no plans to go there in the foreseeable future, but that
shouldn't stop anyone else.
I think an intermediate step would be to do it for code like
(defun my-even? (x)
(cl-labels ((even? (x)
(let ((odd? (lambda (x) (or (= x 1) (even? (1- x))))))
(or (= x 0) (odd? (1- x))))))
(even? x)))
but even that requires a fair bit more work than what I've just done,
I think.
Stefan
next prev parent reply other threads:[~2021-01-09 18:43 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 ` named-let Stefan Monnier
2021-01-09 17:03 ` named-let Helmut Eller
2021-01-09 18:43 ` Stefan Monnier [this message]
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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