220 41507 article Path: news.gmane.org!.POSTED.blaine.gmane.org!not-for-mail From: Dejan Milosavljevic Newsgroups: gmane.comp.lang.c++.isocpp.proposals Subject: Re: Re: Draft proposal of std::upto, std::index, std::enumerate Date: Wed, 27 Feb 2019 08:56:47 +0100 Approved: news@gmane.org Message-ID: References: <52d9e32b-630f-b501-2780-b790b574849a@gmail.com> <40b1d4b8-e872-42b3-89c3-9982a41cd39d@isocpp.org> <830ee9c0-f7ac-4252-96ad-a7038e6e31d6@isocpp.org> Reply-To: std-proposals@isocpp.org Mime-Version: 1.0 Content-Type: multipart/alternative; boundary="00000000000093c5540582db84ac" Injection-Info: blaine.gmane.org; posting-host="blaine.gmane.org:195.159.176.226"; logging-data="66190"; mail-complaints-to="usenet@blaine.gmane.org" Cc: Jake Arkinstall To: std-proposals@isocpp.org Original-X-From: std-proposals+bncBDFYFDOFWUGBBSUF3HRQKGQER6N4JPA@isocpp.org Wed Feb 27 08:57:01 2019 Return-path: Envelope-to: gclcip-std-proposals@m.gmane.org Original-Received: from mail-wr1-f70.google.com ([209.85.221.70]) by blaine.gmane.org with esmtps (TLS1.2:ECDHE_RSA_AES_128_GCM_SHA256:128) (Exim 4.89) (envelope-from ) id 1gyu5M-000H4H-4o for gclcip-std-proposals@m.gmane.org; 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[209.85.220.41]) by mx.google.com with SMTPS id h11sor10093028wre.15.2019.02.26.23.56.57 for (Google Transport Security); Tue, 26 Feb 2019 23:56:57 -0800 (PST) Received-SPF: pass (google.com: domain of dmilos@gmail.com designates 209.85.220.41 as permitted sender) client-ip=209.85.220.41; X-Received: by 2002:adf:fc49:: with SMTP id e9mr1392972wrs.2.1551254217277; Tue, 26 Feb 2019 23:56:57 -0800 (PST) In-Reply-To: <830ee9c0-f7ac-4252-96ad-a7038e6e31d6@isocpp.org> X-Original-Sender: dmilos@gmail.com X-Original-Authentication-Results: mx.google.com; dkim=pass header.i=@gmail.com header.s=20161025 header.b=IamoVHGd; spf=pass (google.com: domain of dmilos@gmail.com designates 209.85.220.41 as permitted sender) smtp.mailfrom=dmilos@gmail.com; dmarc=pass (p=NONE sp=QUARANTINE 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:41507 Archived-At: --00000000000093c5540582db84ac Content-Type: text/plain; charset="UTF-8" Content-Transfer-Encoding: quoted-printable =E2=80=A6 and iteration over file line by line. ifstream ifs("text.txt") for( std::string line : getline( ifs ) ) std::cout << line << std::endl; On Tue, Feb 26, 2019 at 3:30 PM Cleiton Santoia wrote: > > My 2 cents: > > > UDL make it shorter > > auto operator"" _up ( unsigned long long int max ) > { > return ranges::view::iota(static_cast(0), max); > } > > for ( auto x : 10_up ) { > ... > } > > Explorer https://godbolt.org/z/IF3r89 > > Also, I think this "UDL ranges" probably would be included in range TS. > > > Em segunda-feira, 25 de fevereiro de 2019 12:30:12 UTC-3, Barry Revzin > escreveu: >> >> >> On Monday, February 25, 2019 at 8:25:03 AM UTC-6, Andrew Giese wrote: >>> >>> If std::upto alone makes it into the standard, I am happy. >>> >> >> inline constexpr auto upto =3D [](T N) { >> return std::ranges::view::iota(static_cast(0), N); >> }; >> >> >> > -- > 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/830ee9c0-f7a= c-4252-96ad-a7038e6e31d6%40isocpp.org > > . > --=20 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 e= mail 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/CAEfefmxJnQS1FKdT50ebNZwe31_FYMCCL206f9EXb5FR6rp= B-A%40mail.gmail.com. --00000000000093c5540582db84ac Content-Type: text/html; charset="UTF-8" Content-Transfer-Encoding: quoted-printable
=E2=80=A6 and iteration over file line by line.

ifstream if= s("text.txt")
for( std::string line : get= line( ifs=C2=A0) )
=C2=A0std::cout << line &l= t;< std::endl;


On Tue, Feb 26, 2019 at 3:30 PM Cle= iton Santoia <cleitonsantoia= @gmail.com> wrote:
=
My 2 cents:


UDL make= it shorter

auto operator"" _up ( unsigned long long<= span class=3D"gmail-m_5190497241473415744styled-by-prettify" style=3D"color= :rgb(0,0,0)"> int= max )
{
=C2=A0 =C2=A0<= span style=3D"color:rgb(0,0,255)">return ranges::view= ::iota(static_cast<int>(0), max);=
}

for ( auto x = : 10_up ) {=
=C2=A0 ...
}


Also, I t= hink this "UDL ranges" probably would be included in range TS.


Em segunda-feira, 25 de fevereiro de 2019 12:30:12 = UTC-3, Barry Revzin escreveu:

On Mond= ay, February 25, 2019 at 8:25:03 AM UTC-6, Andrew Giese wrote:
If std::upto alone makes it into the standard, I am ha= ppy.

inline constexpr auto upto = =3D []<std::Integral T>(T N) {
=C2=A0 =C2=A0 = return std::ranges<= span style=3D"color:rgb(102,102,0)">::view::iota(<= span style=3D"color:rgb(0,0,136)">static_cast<T>(0), N);
};

=C2=A0
=

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