From: Stefan Monnier <monnier@iro.umontreal.ca>
To: emacs-devel@gnu.org
Cc: Lars Ingebrigtsen <larsi@gnus.org>
Subject: Re: master 792ba71: Add a new function 'buffer-line-statistics'
Date: Tue, 12 Jan 2021 13:15:25 -0500 [thread overview]
Message-ID: <jwveeiq2ffk.fsf-monnier+emacs@gnu.org> (raw)
In-Reply-To: <20210112174750.5928220B2C@vcs0.savannah.gnu.org> (Lars Ingebrigtsen's message of "Tue, 12 Jan 2021 12:47:49 -0500 (EST)")
> + double mean = 0;
[...]
> + /* Blame Knuth. */
> + mean = mean + (this_line - mean) / lines;
I must admit to not being fully cognizant of Knuth, but doesn't this
compute the average rather than the mean?
I thought computing the mean was necessarily O(N) in space (like
keeping the full sequence of line lengths so you can sort it and then
pick the middle point).
Stefan
next parent reply other threads:[~2021-01-12 18:15 UTC|newest]
Thread overview: 8+ messages / expand[flat|nested] mbox.gz Atom feed top
[not found] <20210112174748.18372.29339@vcs0.savannah.gnu.org>
[not found] ` <20210112174750.5928220B2C@vcs0.savannah.gnu.org>
2021-01-12 18:15 ` Stefan Monnier [this message]
2021-01-12 18:29 ` master 792ba71: Add a new function 'buffer-line-statistics' Philipp Stephani
2021-01-12 19:06 ` Stefan Monnier
2021-01-12 18:37 ` Eli Zaretskii
2021-01-12 18:43 ` Eli Zaretskii
2021-01-12 18:39 ` Lars Ingebrigtsen
2021-01-12 19:18 ` Eli Zaretskii
2021-01-12 19:54 ` Stefan Monnier
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