From: Stefan Monnier via Users list for the GNU Emacs text editor <help-gnu-emacs@gnu.org>
To: help-gnu-emacs@gnu.org
Subject: Re: Defining an array in a let clause.
Date: Mon, 05 Dec 2022 16:44:21 -0500 [thread overview]
Message-ID: <jwva641cyvn.fsf-monnier+emacs@gnu.org> (raw)
In-Reply-To: nEQCt0gOOuqaonJc1V0-TBmo_kI_wqBJ2pHpcO2y7hzWmDe7EQgPD_3ZSQC_cPKy076poHqWp2npF8hrv9t0ItZnYQZ7JHFXZI_6BGhuvlU=@protonmail.com
> (mm (nth 1 (decode-time))) ; minutes
> (hh (nth 2 (decode-time))) ; hours
This may end up telling it's 14:59 whereas it's actually 14:00 (because
you were unlucky enough to call the first `decode-time` when it's still
13:59 and the second when we're now 14:00.
Rule of thumb: don't call twice a function unless there's a good reason
for it. Instead store the result of the first call in a var and then
refer to that var.
Stefan
prev parent reply other threads:[~2022-12-05 21:44 UTC|newest]
Thread overview: 8+ messages / expand[flat|nested] mbox.gz Atom feed top
2022-12-05 11:40 Defining an array in a let clause Heime
2022-12-05 12:54 ` Eli Zaretskii
2022-12-05 13:56 ` Heime
2022-12-05 14:42 ` Eli Zaretskii
2022-12-05 18:12 ` Eduardo Ochs
2022-12-05 19:42 ` Jean Louis
2022-12-05 20:01 ` Heime
2022-12-05 21:44 ` Stefan Monnier via Users list for the GNU Emacs text editor [this message]
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