unofficial mirror of emacs-devel@gnu.org 
 help / color / mirror / code / Atom feed
From: "Pascal J. Bourguignon" <pjb@informatimago.com>
To: emacs-devel@gnu.org
Subject: Re: Quoted lambda expressions
Date: Sat, 17 Aug 2013 11:24:00 +0200	[thread overview]
Message-ID: <87d2pcllfz.fsf@informatimago.com> (raw)
In-Reply-To: CAAF+z6GEXVC-5pRKiPcC9f0k8Zdb_1MxYiK50UrghRgn2_bUGQ@mail.gmail.com

Xue Fuqiao <xfq.free@gmail.com> writes:

> AFAIK "(function (lambda ...))" and "#'(lambda ...)" are the same as
> "(lambda ...)", because in subr.el:
>
>    (defmacro lambda (&rest cdr)
>      [...]
>      (list 'function (cons 'lambda cdr)))
>
> But the first two forms are used 600+ times in lisp/ and 13 times in
> doc/.  Does it make sense to do some cleanup?
>
> (And some of them should not be changed, such as the one in "(elisp)
> Anonymous Functions".)

That lambda macro was a late addition in the standardization of Common
Lisp.  I assume it was similarly late in emacs lisp.  That's the reason
why some lisp programmers use #'(lambda …) instead of (lambda …).

-- 
__Pascal Bourguignon__
http://www.informatimago.com/




  reply	other threads:[~2013-08-17  9:24 UTC|newest]

Thread overview: 3+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2013-08-17  8:32 Quoted lambda expressions Xue Fuqiao
2013-08-17  9:24 ` Pascal J. Bourguignon [this message]
2013-08-17  9:36   ` Andreas Schwab

Reply instructions:

You may reply publicly to this message via plain-text email
using any one of the following methods:

* Save the following mbox file, import it into your mail client,
  and reply-to-all from there: mbox

  Avoid top-posting and favor interleaved quoting:
  https://en.wikipedia.org/wiki/Posting_style#Interleaved_style

  List information: https://www.gnu.org/software/emacs/

* Reply using the --to, --cc, and --in-reply-to
  switches of git-send-email(1):

  git send-email \
    --in-reply-to=87d2pcllfz.fsf@informatimago.com \
    --to=pjb@informatimago.com \
    --cc=emacs-devel@gnu.org \
    /path/to/YOUR_REPLY

  https://kernel.org/pub/software/scm/git/docs/git-send-email.html

* If your mail client supports setting the In-Reply-To header
  via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line before the message body.
Code repositories for project(s) associated with this public inbox

	https://git.savannah.gnu.org/cgit/emacs.git

This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox;
as well as URLs for read-only IMAP folder(s) and NNTP newsgroup(s).