From mboxrd@z Thu Jan 1 00:00:00 1970 Path: news.gmane.org!not-for-mail From: Stefan Monnier Newsgroups: gmane.emacs.devel Subject: Re: Using gv in map and seq? Date: Thu, 18 Jun 2015 22:52:55 -0400 Message-ID: References: <87egldxn7p.fsf@petton.fr> <878ublkrqe.fsf@petton.fr> <871thbbdd0.fsf@petton.fr> <87twu6z9cc.fsf@petton.fr> <87egl86b40.fsf@petton.fr> NNTP-Posting-Host: plane.gmane.org Mime-Version: 1.0 Content-Type: text/plain; charset=iso-8859-1 Content-Transfer-Encoding: quoted-printable X-Trace: ger.gmane.org 1434682405 32694 80.91.229.3 (19 Jun 2015 02:53:25 GMT) X-Complaints-To: usenet@ger.gmane.org NNTP-Posting-Date: Fri, 19 Jun 2015 02:53:25 +0000 (UTC) Cc: emacs-devel To: Nicolas Petton Original-X-From: emacs-devel-bounces+ged-emacs-devel=m.gmane.org@gnu.org Fri Jun 19 04:53:18 2015 Return-path: Envelope-to: ged-emacs-devel@m.gmane.org Original-Received: from lists.gnu.org ([208.118.235.17]) by plane.gmane.org with esmtp (Exim 4.69) (envelope-from ) id 1Z5mQZ-00006g-Tg for ged-emacs-devel@m.gmane.org; Fri, 19 Jun 2015 04:53:12 +0200 Original-Received: from localhost ([::1]:55664 helo=lists.gnu.org) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1Z5mQZ-0000Ex-4V for ged-emacs-devel@m.gmane.org; Thu, 18 Jun 2015 22:53:11 -0400 Original-Received: from eggs.gnu.org ([2001:4830:134:3::10]:58465) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1Z5mQW-0000Eh-1q for emacs-devel@gnu.org; Thu, 18 Jun 2015 22:53:08 -0400 Original-Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1Z5mQK-0002XK-Or for emacs-devel@gnu.org; Thu, 18 Jun 2015 22:53:07 -0400 Original-Received: from ironport2-out.teksavvy.com ([206.248.154.181]:50456) by eggs.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1Z5mQK-0002X9-LC for emacs-devel@gnu.org; Thu, 18 Jun 2015 22:52:56 -0400 X-IronPort-Anti-Spam-Filtered: true X-IronPort-Anti-Spam-Result: A0DAEwA731xV//lyoWxcgxCEAoVVuzcJhkOBBAQEAgKBPDkUAQEBAQEBAYEKQQWDXQEBAwFWIwULCzQSFBgNJIg3CM8jAQEIAgEfizqFBQeELQEEsz+BRSOEFCKCeAEBAQ X-IPAS-Result: A0DAEwA731xV//lyoWxcgxCEAoVVuzcJhkOBBAQEAgKBPDkUAQEBAQEBAYEKQQWDXQEBAwFWIwULCzQSFBgNJIg3CM8jAQEIAgEfizqFBQeELQEEsz+BRSOEFCKCeAEBAQ X-IronPort-AV: E=Sophos;i="5.13,465,1427774400"; d="scan'208";a="127315007" Original-Received: from 108-161-114-249.dsl.teksavvy.com (HELO ceviche.home) ([108.161.114.249]) by ironport2-out.teksavvy.com with ESMTP/TLS/DHE-RSA-AES256-SHA; 18 Jun 2015 22:52:55 -0400 Original-Received: by ceviche.home (Postfix, from userid 20848) id 8E2F66610A; Thu, 18 Jun 2015 22:52:55 -0400 (EDT) In-Reply-To: <87egl86b40.fsf@petton.fr> (Nicolas Petton's message of "Thu, 18 Jun 2015 21:59:59 +0200") User-Agent: Gnus/5.13 (Gnus v5.13) Emacs/25.0.50 (gnu/linux) X-detected-operating-system: by eggs.gnu.org: Genre and OS details not recognized. X-Received-From: 206.248.154.181 X-BeenThere: emacs-devel@gnu.org X-Mailman-Version: 2.1.14 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.org@gnu.org Original-Sender: emacs-devel-bounces+ged-emacs-devel=m.gmane.org@gnu.org Xref: news.gmane.org gmane.emacs.devel:187300 Archived-At: > You lost me :-) > Could you explain a bit more? Quelle partie? gv-letplace prend une "place" est la transforme en un "getter" et un "setter". P.ex. si `map' est (nth 5 (foo)), gv-letplace va ajouter un "(let ((x (nthcdr 5 (foo)))) ...)" et renvoyer la sexp "(car x)" comme "getter" et la fonction (lambda (v) `(setcar x ,v)) comme "setter". =C7a doit =EAtre au tout debut du gv-expander, vu que l'=E9valuation de (nthcdr 5 (foo)) doit avoir lieu une seule fois et avant l'=E9valuation de `key', `default', etc... Ensuite, on veut passer cette "place" =E0 `alist-get' (pour =E9viter de r=E9inventer son fonctionnement), mais on peut plus utiliser `map' (qui causerait une deuxi=E8me =E9valuation de (nthcdr 5 (foo)), et donc une erreur) donc il faut synth=E9tiser une place =E0 partir de "mgetter" et "msetter", et c'=E8st =E0 =E7a que sert le `map--raw-place'. Stefan