From mboxrd@z Thu Jan 1 00:00:00 1970 Path: news.gmane.io!.POSTED.ciao.gmane.io!not-for-mail From: Zhu Zihao Newsgroups: gmane.emacs.devel Subject: Re: Slot accessing issues in EIEIO Date: Wed, 06 May 2020 22:28:20 +0800 Message-ID: <878si5gmt7.wl-all_but_last@163.com> References: <87a72lhf3b.wl-all_but_last@163.com> Mime-Version: 1.0 (generated by SEMI-EPG 1.14.7 - "Harue") Content-Type: text/plain; charset=US-ASCII Injection-Info: ciao.gmane.io; posting-host="ciao.gmane.io:159.69.161.202"; logging-data="57882"; mail-complaints-to="usenet@ciao.gmane.io" User-Agent: Wanderlust/2.15.9 (Almost Unreal) SEMI-EPG/1.14.7 (Harue) FLIM/1.14.9 (=?ISO-8859-4?Q?Goj=F2?=) APEL/10.8 EasyPG/1.0.0 Emacs/27.0 (x86_64-pc-linux-gnu) MULE/6.0 (HANACHIRUSATO) Cc: Jonas Bernoulli , Zhu Zihao , emacs-devel@gnu.org To: Stefan Monnier Original-X-From: emacs-devel-bounces+ged-emacs-devel=m.gmane-mx.org@gnu.org Wed May 06 16:30:29 2020 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 1jWL49-000EyI-Oj for ged-emacs-devel@m.gmane-mx.org; Wed, 06 May 2020 16:30:29 +0200 Original-Received: from localhost ([::1]:48162 helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1jWL48-0001Bi-Ot for ged-emacs-devel@m.gmane-mx.org; Wed, 06 May 2020 10:30:28 -0400 Original-Received: from eggs.gnu.org ([2001:470:142:3::10]:58414) by lists.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1jWL2b-0007Lz-Fz for emacs-devel@gnu.org; Wed, 06 May 2020 10:28:53 -0400 Original-Received: from m12-13.163.com ([220.181.12.13]:41125) by eggs.gnu.org with esmtps (TLS1.2:DHE_RSA_AES_256_CBC_SHA1:256) (Exim 4.90_1) (envelope-from ) id 1jWL2V-00068L-SI for emacs-devel@gnu.org; Wed, 06 May 2020 10:28:51 -0400 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=163.com; s=s110527; h=Date:Message-ID:From:Subject:MIME-Version; bh=RAxVd GQT46B+JDDWuSQvhjBcxtJO+cWATbc/Cl4JLGM=; b=NxJ8+7ocM+9K23dBKpgAm nB/enm2CZxafWVV/vqZKR8MzgN7OZJg+g5CwhvBX93rG1J9c4nbellp/LY+iUSsh Bf2jxAVcbJKy6kLc8/ZFt1YBZ46GHO+XWJr9EawTP2YIF/kd6kza/K+MT/t/EIfr a/aAApsAzBnLN4TNr6zBO4= Original-Received: from archlinux.163.com (unknown [113.102.100.98]) by smtp9 (Coremail) with SMTP id DcCowAC3vnaMybJeLYHoAg--.351S2; Wed, 06 May 2020 22:28:32 +0800 (CST) In-Reply-To: X-Face: :]]%@R1{oDt0%iKgI@Kga#OZ; ogt+%OOne&J4#E*O,TIlI)yEFw--I\:3s~EV97GI$1.1!}8inmF9UgtUBB@#8>'8NWNC8qg/v*OLfQB; Z:@G3HeNf3u& ,&HpBGv%?p{bzsl'|5T";1&X X-CM-TRANSID: DcCowAC3vnaMybJeLYHoAg--.351S2 X-Coremail-Antispam: 1Uf129KBjvdXoWruryUAw1kWF47ZF15Gw43Awb_yoW3GrXEgF yq9FykZryrJrWIqwnIya15AFZ8Cw42qrWDXr1rGF1fZryxG39xXr409F45ZFyUJa17trn0 9rWDX3sIqw17WjkaLaAFLSUrUUUUUb8apTn2vfkv8UJUUUU8Yxn0WfASr-VFAUDa7-sFnT 9fnUUvcSsGvfC2KfnxnUUI43ZEXa7IUbaFAtUUUUU== X-Originating-IP: [113.102.100.98] X-CM-SenderInfo: pdoosuxxwbztlvw6il2tof0z/1tbiKRAcr1Xlv6v5bQAAs6 Received-SPF: pass client-ip=220.181.12.13; envelope-from=all_but_last@163.com; helo=m12-13.163.com X-detected-operating-system: by eggs.gnu.org: First seen = 2020/05/06 10:28:37 X-ACL-Warn: Detected OS = Linux 3.1-3.10 [fuzzy] X-Spam_score_int: -20 X-Spam_score: -2.1 X-Spam_bar: -- X-Spam_report: (-2.1 / 5.0 requ) BAYES_00=-1.9, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, DKIM_VALID_AU=-0.1, DKIM_VALID_EF=-0.1, FREEMAIL_FROM=0.001, RCVD_IN_DNSWL_NONE=-0.0001, SPF_PASS=-0.001, URIBL_BLOCKED=0.001 autolearn=_AUTOLEARN X-Spam_action: no action X-BeenThere: emacs-devel@gnu.org X-Mailman-Version: 2.1.23 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:249091 Archived-At: On Wed, 06 May 2020 21:28:18 +0800, Stefan Monnier wrote: > > > Recently, I'm reading the source of > > closql(https://github.com/emacscollective/closql), A Emacs sqlite database ORM > > package. It use eieio object, and put a piece of advice on eieio-oref to > > intercept the reading slot action. > > Yuck! Can you explain why they need an advice on `eieio-oref`? > > > Stefan OK, a closql-object(This is a class defined in closql) is a proxy object to a row in SQL database. So each time user tries to read a slot, closql must sync values between database and Emacs first. It's also possible to reinvent accessors for closql specific usage, but Jonas doesn't do. I guess this way(hack on EIEIO) can reuse some facilities(like with-slots).