From 3519961407626031997 X-Google-Thread: f78e5,ac8f7c796c0ee2eb X-Google-Attributes: gidf78e5,public,usenet X-Google-Language: ENGLISH,ASCII-7-bit Path: g2news1.google.com!news2.google.com!newsfeed2.dallas1.level3.net!newsfeed1.dallas1.level3.net!news.level3.com!wn13feed!worldnet.att.net!207.14.113.39!news.alt.net!comp-std-cpp-robomod!not-for-mail From: "Jim Langston" Newsgroups: comp.std.c++ Subject: Re: std::pair istream >> operator Date: Mon, 19 Nov 2007 12:19:02 CST Organization: Altopia Corp. - Usenet Access - www.altopia.com Lines: 29 Approved: Fergus Henderson , moderator of comp.std.c++ Message-ID: References: X-Trace: pdjoodfomhkjcooblbdnpiohcfhaihogigdhaokfffhkpbfgdgbhgachkpdlnliemjomgnkeiejlbjcigcopjadkaakekfehmjjepjhfebbbakhhhagikchnlejiiiblecpcfdalnnloobep NNTP-Posting-Date: Sat, 17 Nov 2007 20:39:37 MST Return-Path: X-Authentication-Warning: mulga.csse.unimelb.edu.au: fjh set sender to devnull@stump.algebra.com using -f X-Robomod: STUMP, ichudov@algebra.com (Igor Chudov) X-Original-To: std-c++@mailman.ucar.edu Delivered-To: std-c++@mailman.ucar.edu X-SMTP-Auth: no X-Priority: 3 X-MSMail-Priority: Normal X-Newsreader: Microsoft Outlook Express 6.00.2900.3138 X-RFC2646: Format=Flowed; Original X-MimeOLE: Produced By Microsoft MimeOLE V6.00.2900.3198 X-Virus-Scanned: amavisd-new at ucar.edu X-Virus-Scanned: amavisd-new at csse.unimelb.edu.au X-Virus-Scanned: amavisd-new at csse.unimelb.edu.au Xref: g2news1.google.com comp.std.c++:9647 "Andrey" wrote in message news:a7eb92bf-1ab8-438d-8bca-b6f7cfcc056c@o6g2000hsd.googlegroups.com... > Hello. > I'm wondering why there is no standard operator defined like the > following? > > template > istream & operator >> (istream & in, pair & p) { > return in>>p.first>>p.second; > } > > I always define it by hand. Probably the same reason operator( istream& in, std::vector& p ) is not defined. Or map. Or list. Or any of the other containers. They are trivial to define and some people may wish to do them differently. Such as maybe return in >> p.second >> p.first; or whatever. If something is trivial to implement I don't see why it would need to be in the standard. --- [ comp.std.c++ is moderated. To submit articles, try just posting with ] [ your news-reader. If that fails, use mailto:std-c++@ncar.ucar.edu ] [ --- Please see the FAQ before posting. --- ] [ FAQ: http://www.comeaucomputing.com/csc/faq.html ]