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From: Lars Ingebrigtsen <larsi@gnus.org>
To: Stefan Monnier <monnier@iro.umontreal.ca>
Cc: emacs-devel@gnu.org,  Ihor Radchenko <yantar92@gmail.com>
Subject: Re: master 979308b4ca 5/9: org-export-data: Concatenate strings in temporary buffer for performance
Date: Thu, 16 Jun 2022 14:45:26 +0200	[thread overview]
Message-ID: <87zgicdbfd.fsf@gnus.org> (raw)
In-Reply-To: <jwva6aczts1.fsf-monnier+emacs@gnu.org> (Stefan Monnier's message of "Thu, 16 Jun 2022 08:19:33 -0400")

Stefan Monnier <monnier@iro.umontreal.ca> writes:

> AFAICT this just replaces `mapconcat` with a `with-temp-buffer + dolist
> + insert`, so if this makes a significant performance difference, it
> points to a performance problem in our `mapconcat`, right?

It looks like it shouldn't be that difficult to improve the performance
radically in the common case of FUNCTION being #'identity.  If there's
no SEPARATOR we can just pass the arguments more or less directly on to
Fconcat, and if there is a SEPARATOR, we just have to adjust the arg
list.

-- 
(domestic pets only, the antidote for overdose, milk.)
   bloggy blog: http://lars.ingebrigtsen.no



  reply	other threads:[~2022-06-16 12:45 UTC|newest]

Thread overview: 7+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
     [not found] <165536698076.5328.17316430648307086249@vcs2.savannah.gnu.org>
     [not found] ` <20220616080945.7DD14C01685@vcs2.savannah.gnu.org>
2022-06-16 12:19   ` master 979308b4ca 5/9: org-export-data: Concatenate strings in temporary buffer for performance Stefan Monnier
2022-06-16 12:45     ` Lars Ingebrigtsen [this message]
2022-06-16 13:33       ` Robert Pluim
2022-06-16 12:49     ` Ihor Radchenko
2022-06-16 17:43       ` Stefan Monnier
2022-06-17 11:35         ` Ihor Radchenko
2022-06-16 12:53     ` Eli Zaretskii

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