220 37158 article Path: news.gmane.org!.POSTED!not-for-mail From: jsaintmartin356@gmail.com Newsgroups: gmane.comp.lang.c++.isocpp.proposals Subject: Re: pseudo constness Date: Thu, 1 Mar 2018 09:35:06 -0800 (PST) Lines: 76 Approved: news@gmane.org Message-ID: References: <1519283315.58210.23.camel@gmail.com> <0a7e7e42-aa28-4632-8e66-56b0633755ba@isocpp.org> <27b5c95c-5b44-4089-bb14-b2d1b806093b@isocpp.org> <4b81b3b8-5def-4003-b073-89af676e837a@isocpp.org> <34d1dde0-b9fd-4565-8ebe-a1b1936ab96d@isocpp.org> Reply-To: std-proposals@isocpp.org NNTP-Posting-Host: blaine.gmane.org Mime-Version: 1.0 Content-Type: multipart/mixed; boundary="----=_Part_2315_532722258.1519925706755" X-Trace: blaine.gmane.org 1519925588 27464 195.159.176.226 (1 Mar 2018 17:33:08 GMT) X-Complaints-To: usenet@blaine.gmane.org NNTP-Posting-Date: Thu, 1 Mar 2018 17:33:08 +0000 (UTC) To: ISO C++ Standard - Future Proposals Original-X-From: std-proposals+bncBD2KVY7D7YJBBS7T4DKAKGQEGEPCA6Q@isocpp.org Thu Mar 01 18:33:04 2018 Return-path: Envelope-to: gclcip-std-proposals@m.gmane.org Original-Received: from mail-vk0-f69.google.com ([209.85.213.69]) by blaine.gmane.org with esmtp (Exim 4.84_2) (envelope-from ) id 1erS4k-0006gw-El for gclcip-std-proposals@m.gmane.org; Thu, 01 Mar 2018 18:33:02 +0100 Original-Received: by mail-vk0-f69.google.com with SMTP id p197sf3638341vkf.22 for ; Thu, 01 Mar 2018 09:35:09 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=isocpp-org.20150623.gappssmtp.com; s=20150623; h=date:from:to:message-id:in-reply-to:references:subject:mime-version :x-original-sender:reply-to:precedence:mailing-list:list-id :list-post:list-help:list-archive:list-subscribe:list-unsubscribe; bh=az51zJs6TecN6+4rIk/+jfI6Qxsr6Jt1ItuVGeGbx7g=; b=y8RfcORq9h+nq1F6Lt5BUKf3EU4btjWnlnGOC5D37p3FKrfBZQFNAI1+389YxL6iEN AAxDZ46Z5sxyxsuYwJXzDx0PGXWbQTnUabvd2tmdcqbAhbbao137HnEOJCAKgcosgOmt 0lDgsWLr24pJIBdLhVJWxcV5QTLjrKyHtv4rB2H33PwLS8EpUesLeVjpZpIIc7RNmqxt 7BPfJg/BmH48hV94Y9OUHV/TkHkmSTD0unjUGlt7T6zTiAVIYzTFaY/oEI3ETO7sR9tg m50Ya+pVSvIaiQTpjYEm8iWHDgP0v9ZBbCrkufkoMDhrRZaCbZaNS3R/vSswVpp2pkxr 6dNg== DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20161025; h=date:from:to:message-id:in-reply-to:references:subject:mime-version :x-original-sender:reply-to:precedence:mailing-list:list-id :list-post:list-help:list-archive:list-subscribe:list-unsubscribe; bh=az51zJs6TecN6+4rIk/+jfI6Qxsr6Jt1ItuVGeGbx7g=; b=GFrB8EBRYYbTljTqqMNF3sKFYlouZiIB+w8svnXQJKG+rYkMaXUZwX1noJ3UIIUyrx kWxRqKXx2NAurxXfLc8VGN8eKoIOKqQw0ISIf+41eTAIOxzxRr7P3IcmEcoHtBlFdrNk CQpZQztQhMq8FVmm4XRuD4elUea/gDPAsvXg3rnxdlrN7uphtvHVfgUllzx2LQ72XzH6 o7/bWUm/NxmwZWjWf1NVle/N95Cbkkew6ONTkS7aAR7cAouepXiULd86rNzJ9aud9htr /cT0uDEJwhJtVL8WS3PpdXix9be7IBq3URAi5uqciuPFiogch0Js+GvLm10p0pDcxa6a DSzQ== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:date:from:to:message-id:in-reply-to:references :subject:mime-version:x-original-sender:reply-to:precedence :mailing-list:list-id:x-spam-checked-in-group:list-post:list-help :list-archive:list-subscribe:list-unsubscribe; bh=az51zJs6TecN6+4rIk/+jfI6Qxsr6Jt1ItuVGeGbx7g=; b=t5nSjRzsbzWAG1KkVumALIJe1Px52mWtGHToEE/vAajVBugzl41TNd3n01TgQ3oYs3 c/etx0LmkdKw3qr7hy0n6in9W/w0NDgcFknAYZuFhjVBFFcfXI1PColp3gPOxQz7IUll yxfQNpmoZfXphED6a9f43Kzs2DYN9I9VD3jp4sHSPQ8KRHpR2LDI0k8xAt0hphg0c/Fa 1wMb1t8XTm4zTAZy3dg26tXFWwWx+rsL7SGsTrd2eGAfGEqCi0leb+1M8H4m8ODFX3Yb LDjhZauERHpGKyCJapeXVoR6Uh+X84gxhGse3KdvM9yNlVb+a71edDHek+RE6YoyUQ8E LRHw== X-Gm-Message-State: APf1xPAwh/Hia6XqEq8flWu9do1XXcnCS/gIRlXx2ALo5p9/1QYqOQCO 2W8tS499dZKw782mFKwb6kYTDQ== X-Google-Smtp-Source: AG47ELvsBcDH1EE4+h5hDc0Pyir+C0+jAxyz/jaY67vesfjb3j/VdZet1zEZbWhqIff0qzDomhw6/g== X-Received: by 10.31.3.15 with SMTP id 15mr1125758vkd.20.1519925708681; Thu, 01 Mar 2018 09:35:08 -0800 (PST) X-BeenThere: std-proposals@isocpp.org Original-Received: by 10.31.16.66 with SMTP id g63ls3886025vki.4.gmail; Thu, 01 Mar 2018 09:35:07 -0800 (PST) X-Received: by 10.31.178.81 with SMTP id b78mr275572vkf.14.1519925707347; Thu, 01 Mar 2018 09:35:07 -0800 (PST) In-Reply-To: X-Original-Sender: jsaintmartin356@gmail.com Precedence: list Mailing-list: list std-proposals@isocpp.org; contact std-proposals+owners@isocpp.org List-ID: X-Spam-Checked-In-Group: std-proposals@isocpp.org X-Google-Group-Id: 399137483710 List-Post: , List-Help: , List-Archive: List-Subscribe: , List-Unsubscribe: , Xref: news.gmane.org gmane.comp.lang.c++.isocpp.proposals:37158 Archived-At: ------=_Part_2315_532722258.1519925706755 Content-Type: multipart/alternative; boundary="----=_Part_2316_1120157230.1519925706755" ------=_Part_2316_1120157230.1519925706755 Content-Type: text/plain; charset="UTF-8" I want this because for I must choose between different methods, the one giving the best result. I need to try all methods without changing the object (with a guarantee of the compiler : const calls M, const or pseudo const calls, reverse M calls), and then choose the method On Thursday, March 1, 2018 at 4:07:49 PM UTC+1, Nicol Bolas wrote: > > On Thursday, March 1, 2018 at 2:15:49 AM UTC-5, jsaintm...@gmail.com > wrote: >> >> In this function, I am using insert instead of find, because it allows >> hint. Insert is not const, but the element inserted is be erased >> > > Yes, I see that, but I don't understand *why you want that*. You haven't > improved the performance of this operation. So what's the point? > > I've yet to see an example of this "pseudoconst" idea that shows why > someone would want to use it. > > -- You received this message because you are subscribed to the Google Groups "ISO C++ Standard - Future Proposals" group. To unsubscribe from this group and stop receiving emails from it, send an email to std-proposals+unsubscribe@isocpp.org. To post to this group, send email to std-proposals@isocpp.org. To view this discussion on the web visit https://groups.google.com/a/isocpp.org/d/msgid/std-proposals/e08de6c3-e7c2-46a0-a788-24986d9c56b5%40isocpp.org. ------=_Part_2316_1120157230.1519925706755 Content-Type: text/html; charset="UTF-8" Content-Transfer-Encoding: quoted-printable
I want this because for I must choose between different me= thods, the one giving the best result. I need to try all methods without ch= anging the object (with a guarantee of the compiler : const calls M, const = or pseudo const calls, reverse M calls), and then choose the method

= On Thursday, March 1, 2018 at 4:07:49 PM UTC+1, Nicol Bolas wrote:
On Thursday, March 1, = 2018 at 2:15:49 AM UTC-5, jsaintm...@gmail.com wrote:
In this function, I am using inse= rt instead of find, because it allows hint. Insert is not const, but the el= ement inserted is be erased

Yes, I see that,= but I don't understand why you want that. You haven't impro= ved the performance of this operation. So what's the point?

I= 9;ve yet to see an example of this "pseudoconst" idea that shows = why someone would want to use it.

--
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To unsubscribe from this group and stop receiving emails from it, send an e= mail to std-proposa= ls+unsubscribe@isocpp.org.
To post to this group, send email to std-proposals@isocpp.org.
To view this discussion on the web visit https://groups.google.= com/a/isocpp.org/d/msgid/std-proposals/e08de6c3-e7c2-46a0-a788-24986d9c56b5= %40isocpp.org.
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