From: Nicolas Petton <nicolas@petton.fr>
To: David Kastrup <dak@gnu.org>
Cc: Michael Heerdegen <michael_heerdegen@web.de>,
Nicolas Petton <nicolas@petton.fr>,
emacs-devel@gnu.org
Subject: Re: seq-thread-first/last
Date: Fri, 30 Jan 2015 13:25:05 +0100 [thread overview]
Message-ID: <87d25we9r2.fsf@petton.fr> (raw)
In-Reply-To: <87wq44a2f3.fsf@fencepost.gnu.org>
David Kastrup <dak@gnu.org> writes:
>> thread-first/last are not in elisp though, are they?
>
> Hard to corroborate if the people mentioning their wishes don't bother
> mentioning what their desired functions are supposed to do.
Sorry about that. Here's the docstring of `thread-first' from subr-x.el:
Thread FORMS elements as the first argument of their successor.
Example:
(thread-first
5
(+ 20)
(/ 25)
-
(+ 40))
Is equivalent to:
(+ (- (/ (+ 5 20) 25)) 40)
Note how the single `-' got converted into a list before
threading.
Cheers,
Nico
--
Nicolas Petton
http://nicolas-petton.fr
next prev parent reply other threads:[~2015-01-30 12:25 UTC|newest]
Thread overview: 34+ messages / expand[flat|nested] mbox.gz Atom feed top
2015-01-29 16:54 Would seq-range and seq-mapcat be useful? Nicolas Petton
2015-01-29 18:02 ` Artur Malabarba
2015-01-29 22:03 ` Nicolas Petton
2015-01-29 21:40 ` Stefan Monnier
2015-01-29 22:06 ` Nicolas Petton
2015-01-30 6:09 ` Stefan Monnier
2015-01-30 8:00 ` Oleh Krehel
2015-01-30 10:21 ` Nicolas Petton
2015-01-30 15:38 ` Oleh Krehel
2015-01-30 15:59 ` Nicolas Richard
2015-01-30 16:04 ` Oleh Krehel
2015-01-30 16:05 ` Oleh Krehel
2015-01-30 16:36 ` Nicolas Richard
2015-01-30 16:51 ` Oleh Krehel
2015-01-30 16:23 ` Nicolas Petton
2015-02-02 0:11 ` Nicolas Petton
2015-02-02 7:49 ` Oleh Krehel
2015-02-02 9:28 ` Nicolas Petton
2015-02-02 18:34 ` Mark Oteiza
2015-02-02 18:39 ` Oleh Krehel
2015-02-04 12:02 ` Ted Zlatanov
2015-01-30 8:20 ` What about seq-slice? (Was: Would seq-range and seq-mapcat be useful?) Mark Oteiza
2015-01-30 10:25 ` Nicolas Petton
2015-01-30 11:09 ` seq-thread-first/last (was: What about seq-slice?) Michael Heerdegen
2015-01-30 11:59 ` Nicolas Petton
2015-01-30 12:08 ` seq-thread-first/last Michael Heerdegen
2015-01-30 12:21 ` seq-thread-first/last Nicolas Petton
2015-01-30 12:17 ` seq-thread-first/last David Kastrup
2015-01-30 12:25 ` Nicolas Petton [this message]
2015-01-30 12:33 ` seq-thread-first/last Michael Heerdegen
2015-01-30 12:58 ` seq-thread-first/last Bozhidar Batsov
2015-01-30 14:02 ` seq-thread-first/last Artur Malabarba
2015-01-30 14:15 ` seq-thread-first/last Michael Heerdegen
2015-01-30 17:17 ` What about seq-slice? Mark Oteiza
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