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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: Run terminal command with output in current buffer
Date: Mon, 19 Jul 2021 00:49:51 -0400	[thread overview]
Message-ID: <jwv35sb9kmq.fsf-monnier+emacs@gnu.org> (raw)
In-Reply-To: 87y2a33zi3.fsf@zoho.eu

Emanuel Berg via Users list for the GNU Emacs text editor [2021-07-19 02:42:44] wrote:
> Stefan Monnier via Users list for the GNU Emacs text editor wrote:
>> Only use `setq` when you really want that variable to
>> contain different values at different times.
> How do you do it when you compute a value as part of a loop?

AFAICT in your case you do want the variable(s) to contain different values
at different times.

> We just saw it with binary-search, so let's use that as example. OK,
> so they use `setf', not `setq' (set function, not set function
> quote - ?)

`setf` and `setq` are basically the same thing here.

BTW, if you really do want to avoid `setq` (and hence `setf` as well),
you can of course do it, using recursion:

    (defun binary-search (value array)
      (cl-labels ((loop (low high)
                    (let ((middle (floor (+ low high) 2)))
                      (cond ((> (aref array middle) value)
                             (loop low (1- middle)))
                            ((< (aref array middle) value)
                             (loop (1+ middle) high))
                            (t (cl-return middle))))))
        (loop 0 (1- (length array)))))


-- Stefan




  reply	other threads:[~2021-07-19  4:49 UTC|newest]

Thread overview: 42+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2021-07-16  6:43 Run terminal command with output in current buffer lisa-asket
2021-07-16  6:53 ` Jean-Christophe Helary
2021-07-16  7:07 ` Eli Zaretskii
2021-07-16  9:04   ` lisa-asket
2021-07-16 11:32     ` Eli Zaretskii
2021-07-16 11:48       ` lisa-asket
2021-07-16 11:30   ` lisa-asket
2021-07-16 11:58     ` lisa-asket
2021-07-16 15:14       ` Felix Dietrich
2021-07-16 15:21         ` Stefan Monnier via Users list for the GNU Emacs text editor
2021-07-16 15:44           ` lisa-asket
2021-07-16 16:32             ` Felix Dietrich
2021-07-16 17:00               ` lisa-asket
2021-07-16 19:35                 ` Felix Dietrich
2021-07-16 19:48                   ` lisa-asket
2021-07-16 21:58                     ` Felix Dietrich
2021-07-17  5:58                       ` lisa-asket
2021-07-17  9:09                       ` terminal command with output in current buff lisa-asket
2021-07-17  9:19                         ` lisa-asket
2021-07-17 11:33                           ` Felix Dietrich
2021-07-19  1:10                   ` terminal command with output in current buffer Emanuel Berg via Users list for the GNU Emacs text editor
2021-07-19  4:54                     ` Stefan Monnier via Users list for the GNU Emacs text editor
2021-07-19 23:12                       ` Emanuel Berg via Users list for the GNU Emacs text editor
2021-07-20 12:05                       ` ‘read-string’ over ‘read-from-minibuffer’ Felix Dietrich
2021-07-20 15:11                         ` Stefan Monnier via Users list for the GNU Emacs text editor
2021-07-20 15:46                           ` Emanuel Berg via Users list for the GNU Emacs text editor
2021-07-20 12:55                     ` terminal command with output in current buffer Felix Dietrich
2021-07-20 18:15                       ` Yuri Khan
2021-07-20 18:23                         ` lisa-asket
2021-07-16 16:36             ` Run " Stefan Monnier via Users list for the GNU Emacs text editor
2021-07-16 17:24               ` lisa-asket
2021-07-16 18:01                 ` Stefan Monnier via Users list for the GNU Emacs text editor
2021-07-16 18:07                   ` lisa-asket
2021-07-16 18:04               ` lisa-asket
2021-07-19  0:42           ` Emanuel Berg via Users list for the GNU Emacs text editor
2021-07-19  4:49             ` Stefan Monnier via Users list for the GNU Emacs text editor [this message]
2021-07-19 20:51               ` Emanuel Berg via Users list for the GNU Emacs text editor
2021-07-16 15:22         ` lisa-asket
2021-07-16 13:25     ` Felix Dietrich
2021-07-16 13:48 ` Emanuel Berg via Users list for the GNU Emacs text editor
2021-07-16 14:28   ` lisa-asket
2021-07-16 15:06     ` lisa-asket

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