220 32733 article Path: news.gmane.org!.POSTED!not-for-mail From: Dejan Milosavljevic Newsgroups: gmane.comp.lang.c++.isocpp.proposals Subject: Re: Why do we include a Matrix and Vector class into the proposed 2D Graphics Library? 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[2a00:1450:400c:c0c::233]) by mx.google.com with ESMTPS id j3si9710907wrb.194.2017.06.12.13.22.31 for (version=TLS1_2 cipher=ECDHE-RSA-AES128-GCM-SHA256 bits=128/128); Mon, 12 Jun 2017 13:22:31 -0700 (PDT) Received-SPF: pass (google.com: domain of dmilos@gmail.com designates 2a00:1450:400c:c0c::233 as permitted sender) client-ip=2a00:1450:400c:c0c::233; Original-Received: by mail-wr0-x233.google.com with SMTP id q97so112778543wrb.2 for ; Mon, 12 Jun 2017 13:22:31 -0700 (PDT) X-Received: by 10.28.166.204 with SMTP id p195mr411586wme.23.1497298951453; Mon, 12 Jun 2017 13:22:31 -0700 (PDT) Original-Received: by 10.28.216.72 with HTTP; Mon, 12 Jun 2017 13:22:31 -0700 (PDT) In-Reply-To: <2818656.ZnHkfKFBaa@tjmaciei-mobl1> X-Original-Sender: dmilos@gmail.com X-Original-Authentication-Results: mx.google.com; dkim=pass header.i=@gmail.com; spf=pass (google.com: domain of dmilos@gmail.com designates 2a00:1450:400c:c0c::233 as permitted sender) smtp.mailfrom=dmilos@gmail.com; dmarc=pass (p=NONE sp=NONE dis=NONE) header.from=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:32733 Archived-At: --94eb2c12cac81fc3f80551c91412 Content-Type: text/plain; charset="UTF-8" > Where is operator+ for this type going to be defined? Global name space. 'string operator+ (const string& lhs, const string& rhs);' is situated in it. But this question is for library designers. My point is: reuse exiting ( or add new if necessary ) containers and make vector/matrix to be strong typedefs. On Mon, Jun 12, 2017 at 5:59 PM, Thiago Macieira wrote: > On Monday, 12 June 2017 01:54:52 PDT Dejan Milosavljevic wrote: > > He is one possible vector definition: > > > > namespace std::_space_to_be_named_ > > { > > template< class T, std::size_t N> > > using vector = std::array; // Fixed length vector > > } > > > > This has to be combined with strong typedefs ( when they arrive ), and > > additional requirements for T ( concepts ). > > > > For matrix things are similar. First we need appropriate container(s) and > > then typedef(s) in same manner. > > Where is operator+ for this type going to be defined? > > -- > Thiago Macieira - thiago (AT) macieira.info - thiago (AT) kde.org > Software Architect - Intel Open Source Technology Center > > -- > 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/2818656.ZnHkfKFBaa%40tjmaciei-mobl1. > -- 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/CAEfefmxzKZ1cnOneTm5Fekje2c%2BWthrbUQkpLrVJ_hJ%3DkUCP0Q%40mail.gmail.com. --94eb2c12cac81fc3f80551c91412 Content-Type: text/html; charset="UTF-8" Content-Transfer-Encoding: quoted-printable
> Where is operator+ for this type going to be def= ined?
Global name space. 'string operator+ (const string&= lhs, const string& rhs);' is situated in it.
But this qu= estion is for library designers.

My point is:= reuse exiting ( or add new if necessary ) containers and make vector/matri= x=C2=A0to be=C2=A0strong typedefs.

On Mon, Jun 12, 2017 at 5:59 PM, Thiago = Macieira <thiago@macieira.org> wrote:
On Monday, 12 June 2017 01:54:52 PDT Dejan Milosavljevi= c wrote:
> He is one possible vector definition:
>
>=C2=A0 namespace std::_space_to_be_named_
>=C2=A0 =C2=A0{
>=C2=A0 =C2=A0 =C2=A0template< class T,=C2=A0 std::size_t N>
>=C2=A0 =C2=A0 =C2=A0 using vector =3D std::array<T,N>; // Fixed l= ength vector
>=C2=A0 =C2=A0}
>
> This has to be combined with strong typedefs ( when they arrive ), and=
> additional requirements for T ( concepts ).
>
> For matrix things are similar. First we need appropriate container(s) = and
> then typedef(s) in same manner.

Where is operator+ for this type going to be defined?

--
Thiago Macieira - thiago (AT) macieira.info - thiago (AT) kde.org
=C2=A0 =C2=A0Software Architect - Intel Open Source Technology Center

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