From: Jean Louis <bugs@gnu.support>
To: help-gnu-emacs@gnu.org
Subject: Re: Org to Markdown programmatically
Date: Wed, 5 May 2021 23:41:15 +0300 [thread overview]
Message-ID: <YJMC69IkNPzvoO4E@protected.localdomain> (raw)
In-Reply-To: <8735v17yk4.fsf@zoho.eu>
* Emanuel Berg via Users list for the GNU Emacs text editor <help-gnu-emacs@gnu.org> [2021-05-05 22:48]:
> For example:
>
> (require 'cl)
>
> (cl-loop for (x y) in '((1 2) (3 4) (5 6))
> do (message "%d + %d = %d" x y (+ x y)) )
>
> 1 + 2 = 3
> 3 + 4 = 7
> 5 + 6 = 11
Sure. If I look in my Common Lisp directory, I have 94 occurences
of `loop' there. Various complex things. But I try not to over
load things.
The `cl' library is now in "obsolete" directory and function
`cl-loop' is not obsolete. So I guess maybe you will not need
`require', it should work, it is now in `cl-macs.el'
file. Package describes it as extensions to Emacs Lisp for
compatibility reasons.
Same with `while':
(let ((list '((1 2) (3 4) (5 6))))
(while list
(let* ((pair (pop list))
(x (car pair))
(y (cadr pair)))
(message "%d + %d = %d" x y (+ x y)))))
I would like above rather than this one below, as I don't seek CL
compatibility:
(cl-loop for (x y) in '((1 2) (3 4) (5 6))
do (message "%d + %d = %d" x y (+ x y)))
Or with `mapc':
(mapc (lambda (pair)
(let ((x (car pair))
(y (cadr pair)))
(message "%d + %d = %d" x y (+ x y))))
'((1 2) (3 4) (5 6)))
And then benchmark:
(benchmark 100000000
(let ((list '((1 2) (3 4) (5 6))))
(while list
(let* ((pair (pop list))
(x (car pair))
(y (cadr pair)))
(message "%d + %d = %d" x y (+ x y)))))) ⇒ "Elapsed time: 5.520809s"
(benchmark 100000000
(cl-loop for (x y) in '((1 2) (3 4) (5 6))
do (message "%d + %d = %d" x y (+ x y)))) ⇒ "Elapsed time: 5.784922s"
(benchmark 100000000
(let ()
(mapc (lambda (pair)
(let ((x (car pair))
(y (cadr pair)))
(message "%d + %d = %d" x y (+ x y))))
'((1 2) (3 4) (5 6)))
nil)) ⇒ "Elapsed time: 5.158536s"
I thint that benchmark says nothing much, the tests are vague and
they are about as fast. `while' is probably slowest.
`while' is giving me more clarity.
Yet your example still did not replace this function below, there
are no list of lists inside:
(defun outline-highlight-keywords ()
(interactive)
(let ((my-keywords '("TODO" hi-yellow
"DONE" hi-green
"URGENT" hi-red-b)))
(while my-keywords
(let ((keyword (pop my-keywords))
(highlight (pop my-keywords)))
(highlight-regexp keyword highlight)))))
--
Jean
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next prev parent reply other threads:[~2021-05-05 20:41 UTC|newest]
Thread overview: 35+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-05-04 8:48 Org to Markdown programmatically Jean Louis
2021-05-04 9:04 ` Emanuel Berg via Users list for the GNU Emacs text editor
2021-05-04 10:09 ` Colin Baxter
2021-05-04 17:29 ` Jean Louis
2021-05-04 20:23 ` Emanuel Berg via Users list for the GNU Emacs text editor
2021-05-05 6:56 ` Jean Louis
2021-05-05 7:20 ` Emanuel Berg via Users list for the GNU Emacs text editor
2021-05-05 8:34 ` Emanuel Berg via Users list for the GNU Emacs text editor
2021-05-05 11:58 ` Jean Louis
2021-05-05 15:36 ` Emanuel Berg via Users list for the GNU Emacs text editor
2021-05-05 19:47 ` Emanuel Berg via Users list for the GNU Emacs text editor
2021-05-05 20:41 ` Jean Louis [this message]
2021-05-05 20:58 ` Emanuel Berg via Users list for the GNU Emacs text editor
2021-05-05 21:14 ` Jean Louis
2021-05-05 20:47 ` Stefan Monnier via Users list for the GNU Emacs text editor
2021-05-05 21:02 ` Emanuel Berg via Users list for the GNU Emacs text editor
2021-05-05 21:11 ` Emanuel Berg via Users list for the GNU Emacs text editor
2021-05-05 21:46 ` Stefan Monnier via Users list for the GNU Emacs text editor
2021-05-05 22:03 ` Emanuel Berg via Users list for the GNU Emacs text editor
2021-05-05 23:38 ` Emanuel Berg via Users list for the GNU Emacs text editor
2021-05-05 23:54 ` Stefan Monnier via Users list for the GNU Emacs text editor
2021-05-05 21:50 ` Jean Louis
2021-05-05 21:56 ` Emanuel Berg via Users list for the GNU Emacs text editor
2021-05-05 22:56 ` Jean Louis
2021-05-05 23:10 ` Emanuel Berg via Users list for the GNU Emacs text editor
2021-05-05 20:11 ` Jean Louis
2021-05-05 20:38 ` Emanuel Berg via Users list for the GNU Emacs text editor
2021-05-05 20:54 ` Jean Louis
2021-05-05 21:07 ` Emanuel Berg via Users list for the GNU Emacs text editor
2021-05-05 21:33 ` Jean Louis
2021-05-05 21:42 ` Emanuel Berg via Users list for the GNU Emacs text editor
2021-05-05 22:51 ` Jean Louis
2021-05-05 23:05 ` Emanuel Berg via Users list for the GNU Emacs text editor
2021-05-06 3:46 ` Jean Louis
2021-05-22 8:26 ` Jean Louis
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