220 30739 <3b2e3df8-20d7-475d-8461-babed4f6354f@isocpp.org> article Path: news.gmane.org!.POSTED!not-for-mail From: Tristan Brindle Newsgroups: gmane.comp.lang.c++.isocpp.proposals Subject: UDLs for fixed-width integer types Date: Wed, 1 Feb 2017 12:24:55 -0800 (PST) Lines: 87 Approved: news@gmane.org Message-ID: <3b2e3df8-20d7-475d-8461-babed4f6354f@isocpp.org> Reply-To: std-proposals@isocpp.org NNTP-Posting-Host: blaine.gmane.org Mime-Version: 1.0 Content-Type: multipart/mixed; boundary="----=_Part_362_60733521.1485980695121" X-Trace: blaine.gmane.org 1485980697 23352 195.159.176.226 (1 Feb 2017 20:24:57 GMT) X-Complaints-To: usenet@blaine.gmane.org NNTP-Posting-Date: Wed, 1 Feb 2017 20:24:57 +0000 (UTC) To: ISO C++ Standard - Future Proposals Original-X-From: std-proposals+bncBCXMHUPP7AERBF4IZHCAKGQE3HSEAMQ@isocpp.org Wed Feb 01 21:24:52 2017 Return-path: Envelope-to: gclcip-std-proposals@m.gmane.org Original-Received: from mail-oi0-f72.google.com ([209.85.218.72]) by blaine.gmane.org with esmtp (Exim 4.84_2) (envelope-from ) id 1cZ1SV-0005ps-A4 for gclcip-std-proposals@m.gmane.org; Wed, 01 Feb 2017 21:24:51 +0100 Original-Received: by mail-oi0-f72.google.com with SMTP id w144sf439722027oiw.0 for ; Wed, 01 Feb 2017 12:24:57 -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: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=NQcpdR4aw1WSO+2wzs8pIWg+K5qk4tLNvVO5tVE2zv4=; b=06ydn0K7DB0CRiMK96WQlRhgT+bUlb4KhU0eUu/9r+1aYE41eRpo5z31AgmWuNLH2m gszdx/W2hDb5b2utvS5VF0/TCFTUNiFq2a2i3ROhwtSWzRoXeHbapOBV/bzgyQ3JzfRn jKdvrw/smfTz5gev7IQn0WpS0W1Kx2GzGm8ATjJS49WtAbZSG+4tGTysBjBAMLIS3G0X Tp0q2piubnic6TkLIibv4X1HkG97CBszfPr0Xs3q2jM27ECAlx5WWb5PYTsFtUkqFkBM ZCczSghTtMGEpUrTKj8JkM9b4R+DZmrMruNFRyUU6qYVruFTmtPJGBXdO343WvFq4bP+ mxMg== DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20161025; h=date:from:to:message-id: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=NQcpdR4aw1WSO+2wzs8pIWg+K5qk4tLNvVO5tVE2zv4=; b=ecEY6ASQmlwI/7/SQYzuoBRoZdgCmV+HqlzNL26wxJSNqDK0HFQMlflImFEyysNFRh t2JmNHD9O2gRyRjzYwzt1pFzbzCgwlHMXSw2JQUl7u6OfXS12NjrFh0/MEwmMI91dCil g4yCJ1fcqurkw6yr2LQ9vN5df7ytUbtOVB8aKX1mRJXfLDo+tKw/qo8nxtHnOLN5JhXh 2ia4iE7VVCeyqdt3mwL1qLEQZaecewo4RKzE/WYxCTUDIDpwNgnz1MEMkj8t7e+O+YPH 1qUIeTnMmKL3gMvXswuwIvJnuW4bUXGk00G0Svyrx+s77CIltxMKhQweVsWW92W6LwlM uZJA== 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: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=NQcpdR4aw1WSO+2wzs8pIWg+K5qk4tLNvVO5tVE2zv4=; b=aBo6I4MXfAwurpPCyBVqyPyOPsQWSkGPa7sLYHSCUCcGw+rBdlXctRWwkMFI/KJitD sMkMKzYupAxPc62Inf/+9JLQ3iEFQye72q2MAFe53mg47uFVM8dgkO+jtcCV1+KrhrYM zlTt689yidISuHMuu3uqEL3GwDdLoZMckLqTnaA7dl3SZd1ksjt1N52BGEg4PiFmuYff 4GXnPlrrJGFLjdmRe/4ckowKEVs1oXJJRMdtxJTzKvHOB24v1DEsUKq6QUHAU6yaxh0t 4CqmVHG2cORjgZ0YsGoLLuhwSGZ7egzieqHQR0Srje++y8lJNU34ysMZIjGvP2grcuok EC6w== X-Gm-Message-State: AMke39m7IvLYEJfXje6jcOlD1uJFybmqQOElEpMtS9wOkFnZbLSh2J1KFeAVr5eOR3S4LA== X-Received: by 10.157.11.245 with SMTP id 108mr1320451oth.142.1485980696303; Wed, 01 Feb 2017 12:24:56 -0800 (PST) X-BeenThere: std-proposals@isocpp.org Original-Received: by 10.157.11.115 with SMTP id p48ls2260129otd.19.gmail; Wed, 01 Feb 2017 12:24:55 -0800 (PST) X-Received: by 10.157.12.165 with SMTP id b34mr636075otb.2.1485980695561; Wed, 01 Feb 2017 12:24:55 -0800 (PST) X-Original-Sender: tcbrindle@gmail.com 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:30739 Archived-At: ------=_Part_362_60733521.1485980695121 Content-Type: multipart/alternative; boundary="----=_Part_363_1241895113.1485980695122" ------=_Part_363_1241895113.1485980695122 Content-Type: text/plain; charset=UTF-8 I think a small-but-worthwhile addition to the standard library would be to add user-defined literals for the various fixed-width integer types defined in , for example using namespace std::literals; auto a = 0u64; // a is std::uint64_t auto b = 0i16; // b is std::int16_t to complement the core language-provided literals such as auto c = 0ul; // c is unsigned long As far a I can see there have been no papers proposing this to date, although P0330r0 (proposing the zu literal for size_t) mentions it as a possible direction for further work. Before I go hacking up a paper of my own however, I guess I should canvas a general opinion: basically, is this something that is worthwhile to pursue, or is it likely to get quickly shot down in committee? Thanks, Tristan -- 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/3b2e3df8-20d7-475d-8461-babed4f6354f%40isocpp.org. ------=_Part_363_1241895113.1485980695122 Content-Type: text/html; charset=UTF-8 Content-Transfer-Encoding: quoted-printable

I think a small-but-worthwhile addition to the st= andard library would be to add user-defined literals for the various fixed-= width integer types defined in <cstdint>, for example

<= /div>
=C2=A0 using namespace std:= :literals;

=C2=A0 auto a =3D 0u64; = =C2=A0 // a is std::uint64_t
=C2=A0 auto b =3D 0i16; =C2=A0 // b is std::int16_t

to complement the core language-provided literals such as=

=C2=A0 =C2=A0P0330r0=C2=A0(proposing the=C2=A0zu=C2=A0literal for size_t) =C2=A0mentions it as a possi= ble direction for further work.

Before I go hackin= g up a paper of my own however, I guess I should canvas a general opinion: = basically, is this something that is worthwhile to pursue, or is it likely = to get quickly shot down in committee?


<= div>Thanks,

Tristan

--
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