From: "Óscar Fuentes" <ofv@wanadoo.es>
To: emacs-devel@gnu.org
Subject: Re: A faster derived-mode-p
Date: Mon, 15 Feb 2021 00:03:51 +0100 [thread overview]
Message-ID: <87mtw6gsko.fsf@telefonica.net> (raw)
In-Reply-To: 878s7q9slc.fsf@tcd.ie
"Basil L. Contovounesios" <contovob@tcd.ie> writes:
> Dmitry Gutov <dgutov@yandex.ru> writes:
>
>> On 14.02.2021 22:22, Lars Ingebrigtsen wrote:
>>> There are only 11K commands in the Emacs tree, so I don't know whether
>>> the current default completion predicate is going to turn out to be
>>> problematically slow or not.
>>
>> I just evaluated
>>
>> (length (cl-delete-if-not #'commandp obarray))
>>
>> in a running Emacs session with a bunch of third-party packages installed and
>> loaded, and that still evaluated only to 1083.
>
> That's not counting the obarray's buckets. I get ~6x as many results in
> my session with (length (all-completions "" obarray #'commandp)).
~10000 here.
Can't we memoize derived-mode-p ? It doesn't look like something that
could take a lot of space.
next prev parent reply other threads:[~2021-02-14 23:03 UTC|newest]
Thread overview: 8+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-02-14 20:22 A faster derived-mode-p Lars Ingebrigtsen
2021-02-14 22:25 ` Dmitry Gutov
2021-02-14 22:45 ` Basil L. Contovounesios
2021-02-14 23:03 ` Óscar Fuentes [this message]
2021-02-15 2:34 ` Dmitry Gutov
2021-02-15 2:47 ` Lars Ingebrigtsen
2021-02-14 23:51 ` Stefan Monnier
2021-02-15 2:56 ` Lars Ingebrigtsen
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