From mboxrd@z Thu Jan 1 00:00:00 1970 Path: news.gmane.io!.POSTED.blaine.gmane.org!not-for-mail From: Richard Stallman Newsgroups: gmane.emacs.devel Subject: Re: Is there any easy way to fork in elisp? Why not? Date: Mon, 01 Nov 2021 23:55:18 -0400 Message-ID: References: <5B1A71D8-BC93-414C-A15D-F439A58183DB@gmail.com> Reply-To: rms@gnu.org Content-Type: text/plain; charset=Utf-8 Injection-Info: ciao.gmane.io; posting-host="blaine.gmane.org:116.202.254.214"; logging-data="9107"; mail-complaints-to="usenet@ciao.gmane.io" Cc: rudiwillalwaysloveyou@gmail.com, emacs-devel@gnu.org To: Philipp Original-X-From: emacs-devel-bounces+ged-emacs-devel=m.gmane-mx.org@gnu.org Tue Nov 02 04:58:00 2021 Return-path: Envelope-to: ged-emacs-devel@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 1mhkvw-00027M-AI for ged-emacs-devel@m.gmane-mx.org; Tue, 02 Nov 2021 04:58:00 +0100 Original-Received: from localhost ([::1]:53582 helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1mhkvu-0004fY-4P for ged-emacs-devel@m.gmane-mx.org; Mon, 01 Nov 2021 23:57:58 -0400 Original-Received: from eggs.gnu.org ([2001:470:142:3::10]:54718) by lists.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1mhktK-000359-Mx for emacs-devel@gnu.org; Mon, 01 Nov 2021 23:55:18 -0400 Original-Received: from fencepost.gnu.org ([2001:470:142:3::e]:54040) by eggs.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1mhktK-0005MY-Dm; Mon, 01 Nov 2021 23:55:18 -0400 DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=gnu.org; s=fencepost-gnu-org; h=Date:References:Subject:In-Reply-To:To:From: mime-version; bh=knqw1L/s/9ZFjw7uIWVrFFzZMQcKUMfEt9V+lDFBugY=; b=Ai5YHJnemuj/ s5/qzTcnR4h4tJ2LSis2NvOPf87/goAM8pNziTUqoPHrzsvHA6gcq7CjgVqg9gLe2ujmjJRmY2j5A /MREpLd1rVIpUUOdF17byFDvnCcuUFGWVOsxNI3pNNOWU+9lLjAloc1U9HBrjD74rZqXweZPnuDMe zhzTUuLn0/vdzrfere/QcYJLHXx8cy89xmJ/ISM4EiPFGtaKlSKxvwHRlz0Eo8DIp/CvDnI2arSfq AaA7qpxvoYYYpRipIwZBeXdmPnUWtoBWYlGJdv5vqWkUESop43+rwsUkoRM8R/RQEKGpopDhINy9T zTFUyG0lq3soYL0EDniPWg==; Original-Received: from rms by fencepost.gnu.org with local (Exim 4.90_1) (envelope-from ) id 1mhktK-0003tf-7U; Mon, 01 Nov 2021 23:55:18 -0400 In-Reply-To: <5B1A71D8-BC93-414C-A15D-F439A58183DB@gmail.com> (message from Philipp on Sun, 31 Oct 2021 11:34:02 +0100) X-BeenThere: emacs-devel@gnu.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: "Emacs development discussions." List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: emacs-devel-bounces+ged-emacs-devel=m.gmane-mx.org@gnu.org Original-Sender: "Emacs-devel" Xref: news.gmane.io gmane.emacs.devel:278463 Archived-At: [[[ To any NSA and FBI agents reading my email: please consider ]]] [[[ whether defending the US Constitution against all enemies, ]]] [[[ foreign or domestic, requires you to follow Snowden's example. ]]] > The fork API could be: > ``` > (let-fork ((some_val (expensive_compute)) ...) > (lambda() > (message "Computed: %s" some_val))) I don't see why this needs to do a fork at all. If `expensive_compute' does not set any free variables and does not modify preexisting data structures, it should work to define `let-fork' as equivalent to `let'. -- Dr Richard Stallman (https://stallman.org) Chief GNUisance of the GNU Project (https://gnu.org) Founder, Free Software Foundation (https://fsf.org) Internet Hall-of-Famer (https://internethalloffame.org)