From mboxrd@z Thu Jan 1 00:00:00 1970 Path: news.gmane.io!.POSTED.blaine.gmane.org!not-for-mail From: Michael Heerdegen Newsgroups: gmane.emacs.help Subject: Re: Closures - do you understand them well? Date: Mon, 12 Dec 2022 07:09:00 +0100 Message-ID: <87pmcpm9vn.fsf@web.de> References: <87h6y5pt8k.fsf@web.de> <87bkodpqnk.fsf@web.de> <87k030tlfh.fsf@web.de> <87ilike1l8.fsf@gnu.org> <87cz8suv92.fsf@dataswamp.org> <87pmcpo1wz.fsf@web.de> Mime-Version: 1.0 Content-Type: text/plain Injection-Info: ciao.gmane.io; posting-host="blaine.gmane.org:116.202.254.214"; logging-data="8504"; mail-complaints-to="usenet@ciao.gmane.io" User-Agent: Gnus/5.13 (Gnus v5.13) To: help-gnu-emacs@gnu.org Cancel-Lock: sha1:CxOao0oJyfPJW56Z5J21V5JsDrA= Original-X-From: help-gnu-emacs-bounces+geh-help-gnu-emacs=m.gmane-mx.org@gnu.org Mon Dec 12 07:10:05 2022 Return-path: Envelope-to: geh-help-gnu-emacs@m.gmane-mx.org Original-Received: from lists.gnu.org ([209.51.188.17]) by ciao.gmane.io with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.92) (envelope-from ) id 1p4c0p-0001yq-Tc for geh-help-gnu-emacs@m.gmane-mx.org; Mon, 12 Dec 2022 07:10:03 +0100 Original-Received: from localhost ([::1] helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1p4c00-00087j-TA; Mon, 12 Dec 2022 01:09:13 -0500 Original-Received: from eggs.gnu.org ([2001:470:142:3::10]) by lists.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1p4bzz-00086t-5t for help-gnu-emacs@gnu.org; Mon, 12 Dec 2022 01:09:11 -0500 Original-Received: from ciao.gmane.io ([116.202.254.214]) by eggs.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1p4bzx-0004Rp-AG for help-gnu-emacs@gnu.org; Mon, 12 Dec 2022 01:09:10 -0500 Original-Received: from list by ciao.gmane.io with local (Exim 4.92) (envelope-from ) id 1p4bzv-0000oR-Dd for help-gnu-emacs@gnu.org; Mon, 12 Dec 2022 07:09:07 +0100 X-Injected-Via-Gmane: http://gmane.org/ Received-SPF: pass client-ip=116.202.254.214; envelope-from=geh-help-gnu-emacs@m.gmane-mx.org; helo=ciao.gmane.io X-Spam_score_int: -15 X-Spam_score: -1.6 X-Spam_bar: - X-Spam_report: (-1.6 / 5.0 requ) BAYES_00=-1.9, FREEMAIL_FORGED_FROMDOMAIN=0.001, FREEMAIL_FROM=0.001, HEADER_FROM_DIFFERENT_DOMAINS=0.25, SPF_HELO_NONE=0.001, SPF_PASS=-0.001 autolearn=no autolearn_force=no X-Spam_action: no action X-BeenThere: help-gnu-emacs@gnu.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: Users list for the GNU Emacs text editor List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: help-gnu-emacs-bounces+geh-help-gnu-emacs=m.gmane-mx.org@gnu.org Original-Sender: help-gnu-emacs-bounces+geh-help-gnu-emacs=m.gmane-mx.org@gnu.org Xref: news.gmane.io gmane.emacs.help:141664 Archived-At: tomas@tuxteam.de writes: > > The expansion of (push `(lambda () ,i) funs) is > ^^^ > It was the "poor human's closure" in pre-lexical times, > after all. I wonder if that's a reason why lambda expressions where originally made to be treated as functions. > > #+begin_src emacs-lisp > > (setq funs > > (cons > > (list 'lambda nil i) > > funs)) > > #+end_src > > Yes, the binding of i is effective before the lambda > expression is "compiled" (whatever that means when you > are playing interpreter, but it still means something, > no?) That's a somewhat quite meta question - but it very probably does mean something (at least I know what you mean...) Michael.