220 15450 <5880acc5-8236-40a0-bd5d-dfa6d9284572@isocpp.org> article Path: news.gmane.org!not-for-mail From: R.HL@gmx.net Newsgroups: gmane.comp.lang.c++.isocpp.proposals Subject: Adding a remove_cv_reference type trait Date: Sun, 4 Jan 2015 10:33:47 -0800 (PST) Lines: 103 Approved: news@gmane.org Message-ID: <5880acc5-8236-40a0-bd5d-dfa6d9284572@isocpp.org> Reply-To: std-proposals@isocpp.org NNTP-Posting-Host: plane.gmane.org Mime-Version: 1.0 Content-Type: multipart/mixed; boundary="----=_Part_3304_25283539.1420396427193" X-Trace: ger.gmane.org 1420396440 27794 80.91.229.3 (4 Jan 2015 18:34:00 GMT) X-Complaints-To: usenet@ger.gmane.org NNTP-Posting-Date: Sun, 4 Jan 2015 18:34:00 +0000 (UTC) To: std-proposals@isocpp.org Original-X-From: std-proposals+bncBDRN5RPSR4MRBDEPU2SQKGQEK2FJDDI@isocpp.org Sun Jan 04 19:33:54 2015 Return-path: Envelope-to: gclcip-std-proposals@m.gmane.org Original-Received: from mail-ig0-f197.google.com ([209.85.213.197]) by plane.gmane.org with esmtp (Exim 4.69) (envelope-from ) id 1Y7pzp-0000Ke-QH for gclcip-std-proposals@m.gmane.org; Sun, 04 Jan 2015 19:33:49 +0100 Original-Received: by mail-ig0-f197.google.com with SMTP id r2sf13991774igi.4 for ; Sun, 04 Jan 2015 10:33:48 -0800 (PST) X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20130820; h=x-gm-message-state:date:from:to:message-id:subject:mime-version :content-type:x-original-sender:reply-to:precedence:mailing-list :list-id:list-post:list-help:list-archive:list-subscribe :list-unsubscribe; bh=VR4s8uPFYODMQCRR0770YBIdZZ9eOsCZQc5qVSqUumk=; b=JKq0p39j1wQDL7MIQDmLF+DBxSkqLYO6roC6t6ZNzxt6D0bF56skEgEO2mRlXkQ5yP 3MY6dWv1X4txSPxZjMZLieneNrlgJtHkR3+Qh4qz9WXYVMG7OZ57OZjH9IUheKK0rq2R D0m1dhWGE0IT7CHxC9JnGzSBafVKf3ZUiv10L9Y0dI2HC/csOtpV8VJI+cvPHJLRoT7U yd7Y1LYAaLzWfGAvNdS+fY4ehf4SrT8WIvr4aPj7N496x+yWejwQy9NL72h2ApCeC1f3 1JgBa6LilakLpAuPSpGmEQUEAqQfA05S/OZl1ma+dczVyS3yZC2HRMAouj+XPJInxOzt sy9Q== X-Gm-Message-State: ALoCoQkOlekgNeQbftQ7LjkUdfyIakSneVo6onaZqCmJKLtvOG6eU0URkMPfNYFU3ErI+HBLGvDM X-Received: by 10.42.229.5 with SMTP id jg5mr65483610icb.23.1420396428829; Sun, 04 Jan 2015 10:33:48 -0800 (PST) X-BeenThere: std-proposals@isocpp.org Original-Received: by 10.140.95.75 with SMTP id h69ls2984257qge.92.gmail; Sun, 04 Jan 2015 10:33:48 -0800 (PST) X-Received: by 10.140.91.40 with SMTP id y37mr992qgd.11.1420396428098; Sun, 04 Jan 2015 10:33:48 -0800 (PST) X-Original-Sender: R.HL@gmx.net Precedence: list Mailing-list: list std-proposals@isocpp.org; contact std-proposals+owners@isocpp.org List-ID: 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:15450 Archived-At: ------=_Part_3304_25283539.1420396427193 Content-Type: multipart/alternative; boundary="----=_Part_3305_1886161514.1420396427193" ------=_Part_3305_1886161514.1420396427193 Content-Type: text/plain; charset=UTF-8 There is a generally useful type trait not yet included in the standard library, simply removing all references and cv-qualifiers from a type - i.e. it maps int const& to int int&& to int and so forth. This trait could be named remove_cv_reference. The implementation is trivial, e.g. template struct remove_cv_reference { using type = remove_cv_t>; }; template struct remove_cv_reference_t = typename remove_cv_reference::type; Is it feasible to include this in ? -- --- 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. Visit this group at http://groups.google.com/a/isocpp.org/group/std-proposals/. ------=_Part_3305_1886161514.1420396427193 Content-Type: text/html; charset=UTF-8 Content-Transfer-Encoding: quoted-printable
There is a generally useful type trait not yet included in= the standard library, simply removing all references and cv-qualifiers fro= m a type - i.e. it maps
int const&     to    int
int&& &n= bsp;        to    int
and so forth. This trait could be named remove_cv_reference. The implementation is trivial, e.g.
template <typename T>
struct=  remove_cv_reference = { using=  type =3D&n= bsp;remove_cv_t<<= span style=3D"color: rgb(0, 0, 0);">remove_reference_t<T>>; };

template <typename T&= gt;
struct&nb= sp;remove_cv_reference_t =3D typename remove_cv_reference<T>::= type;
Is it feasible to include this in = <type_traits>?

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