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From: tomas@tuxteam.de
To: help-gnu-emacs@gnu.org, Drew Adams <drew.adams@oracle.com>,
	Michael Heerdegen <michael_heerdegen@web.de>
Subject: Re: [External] : Re: Emacs 30.0 warning from `cl-pushnew' and `memql'
Date: Thu, 29 Dec 2022 11:12:08 +0100	[thread overview]
Message-ID: <Y61n+HLK4ojBAQOp@tuxteam.de> (raw)
In-Reply-To: <Y61bSbc8SX1Axa+r@protected.localdomain>

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On Thu, Dec 29, 2022 at 12:18:01PM +0300, Jean Louis wrote:
> Thanks Thomas, after following your corrections:
> 
> (setq my-list '()) ➜ nil
> (benchmark 10000000 '(setq my-list (cons "Word" my-list))) ➜ "Elapsed time: 5.943843s (4.111302s in 3 GCs)"
> 
> It works!
> 
> > Read benchmark's doc string carefully :-)
> 
> My misunderstanding is with FORM and BODY, when I read FORM, I
> understand it is same as BODY. Now I see the difference.
> 
> I have found reference in Emacs Lisp manual, but I cannot find
> reference that FORM as argument means quoted sexp, if you have that
> reference, let me know

It's a bit subtle, since the point is rather the intention
than the data type itself (the result of an evaluation is
itself a form after all -- that's the magic of Lisp).

The next I came to it (I searched Elisp's manual with `i'
then `form' is "10.1 Introduction to Evaluation":

     A Lisp object that is intended for evaluation is
   called a “form” or “expression”(1).  The fact that
   forms are data objects and not merely text is one 
   of the fundamental differences between Lisp-like
   languages and typical programming languages.  Any
   object can be evaluated [...]

Worth reading :)

Cheers
-- 
t

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  parent reply	other threads:[~2022-12-29 10:12 UTC|newest]

Thread overview: 61+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2022-12-26 20:38 Emacs 30.0 warning from `cl-pushnew' and `memql' Emanuel Berg
2022-12-27  6:56 ` Jean Louis
2022-12-27 10:28 ` Michael Heerdegen
2022-12-27 11:33   ` Emanuel Berg
2022-12-27 11:39   ` Emanuel Berg
2022-12-28  3:23     ` [External] : " Drew Adams
2022-12-28  4:23       ` Emanuel Berg
2022-12-29 22:27         ` Drew Adams
2022-12-30 22:27           ` Emanuel Berg
2022-12-30  6:30         ` tomas
2022-12-28  6:25     ` tomas
2022-12-28 11:59       ` Michael Heerdegen
2022-12-28 12:41         ` tomas
2022-12-28 12:45           ` Emanuel Berg
2022-12-28 13:19           ` Emanuel Berg
2022-12-28 14:54           ` Emanuel Berg
2022-12-29 22:31             ` Stefan Monnier via Users list for the GNU Emacs text editor
2023-01-08  4:18               ` Emanuel Berg
2023-01-08 18:54                 ` Andreas Eder
2022-12-28 17:57           ` [External] : " Drew Adams
2022-12-28 18:10             ` Stefan Monnier via Users list for the GNU Emacs text editor
2022-12-28 19:29               ` Emanuel Berg
2022-12-28 19:35               ` Drew Adams
2022-12-28 19:36               ` tomas
2022-12-28 19:24             ` Emanuel Berg
2022-12-28 17:54         ` Drew Adams
2022-12-28 18:05           ` Stefan Monnier via Users list for the GNU Emacs text editor
2022-12-28 19:35             ` Drew Adams
2022-12-29  3:34               ` Stefan Monnier via Users list for the GNU Emacs text editor
2022-12-29 19:06                 ` Drew Adams
2022-12-29 19:45                   ` Stefan Monnier via Users list for the GNU Emacs text editor
2022-12-29 22:00                     ` Drew Adams
2022-12-29 22:25                       ` Stefan Monnier via Users list for the GNU Emacs text editor
2022-12-30  7:29                         ` Drew Adams
2022-12-30 18:55                           ` Stefan Monnier via Users list for the GNU Emacs text editor
2022-12-30 22:55                             ` Drew Adams
2022-12-31  0:08                               ` Stefan Monnier via Users list for the GNU Emacs text editor
2022-12-31  2:45                                 ` Drew Adams
2022-12-31  4:53                                   ` Stefan Monnier via Users list for the GNU Emacs text editor
2022-12-28 19:21           ` Emanuel Berg
2022-12-28 20:24         ` Jean Louis
2022-12-28 20:56           ` Emanuel Berg
2022-12-28 21:24           ` [External] : " Drew Adams
2022-12-28 22:47             ` Jean Louis
2022-12-28 23:48               ` Emanuel Berg
2022-12-29  6:03               ` tomas
2022-12-29  6:59                 ` Emanuel Berg
2022-12-29  7:08                 ` Emanuel Berg
2022-12-29  7:19                 ` Emanuel Berg
2022-12-29 22:41                   ` Drew Adams
2022-12-30 23:03                     ` Emanuel Berg
2022-12-30  6:35                   ` tomas
2022-12-29  9:18                 ` Jean Louis
2022-12-29 10:04                   ` Emanuel Berg
2022-12-29 10:12                   ` tomas [this message]
2022-12-29 10:20                     ` Emanuel Berg
2022-12-29 10:26                     ` Emanuel Berg
2022-12-29 10:36                   ` Michael Heerdegen
2022-12-29 14:47                 ` Stefan Monnier via Users list for the GNU Emacs text editor
2022-12-29 10:39           ` Michael Heerdegen
2022-12-28 12:44       ` Emanuel Berg

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