220 13715 article Path: news.gmane.org!not-for-mail From: Matthew Woehlke Newsgroups: gmane.comp.lang.c++.isocpp.proposals Subject: Re: Generic std::size, a la std::begin Date: Mon, 06 Oct 2014 14:38:13 -0400 Lines: 39 Approved: news@gmane.org Message-ID: References: <8808df5e-62c4-459d-acd9-00e63adb9476@isocpp.org> <20141004004445.GA8207@lenovo> <890596a6-4fe4-4fe4-b96b-0196aaac94cf@isocpp.org> Reply-To: std-proposals@isocpp.org NNTP-Posting-Host: plane.gmane.org Mime-Version: 1.0 Content-Type: text/plain; charset=UTF-8 X-Trace: ger.gmane.org 1412620724 27610 80.91.229.3 (6 Oct 2014 18:38:44 GMT) X-Complaints-To: usenet@ger.gmane.org NNTP-Posting-Date: Mon, 6 Oct 2014 18:38:44 +0000 (UTC) To: std-proposals@isocpp.org Original-X-From: std-proposals+bncBCO5FYHBU4ERBKGDZOQQKGQEIZZL6GY@isocpp.org Mon Oct 06 20:38:37 2014 Return-path: Envelope-to: gclcip-std-proposals@m.gmane.org Original-Received: from mail-lb0-f198.google.com ([209.85.217.198]) by plane.gmane.org with esmtp (Exim 4.69) (envelope-from ) id 1XbDB4-00043J-7O for gclcip-std-proposals@m.gmane.org; Mon, 06 Oct 2014 20:38:34 +0200 Original-Received: by mail-lb0-f198.google.com with SMTP id 10sf3157755lbg.5 for ; Mon, 06 Oct 2014 11:38:34 -0700 (PDT) X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20130820; h=x-gm-message-state:to:from:subject:date:lines:message-id:references :mime-version:user-agent:in-reply-to:x-original-sender :x-original-authentication-results:reply-to:precedence:mailing-list :list-id:list-post:list-help:list-archive:list-subscribe :list-unsubscribe:content-type; bh=bel+y2N1gKcbc3Y99g+x7NY46cGRkC87J30vJuvcY7A=; b=hM9VNeb/k5+tEzglP+mD24CE1XRfCTzfH6VSgIfQcrRIG6aTic9cjWVfFNEMma5wCR 5RZZ4ySQ69VbIkxPvJj5B+1/uqV2PquJH/cJwHiOC41nFcohTmXk+Ftk2UtwEKh586jd +yK1A12N2yuA4A4hdB0UbIc2M3EeYlWv+vpmAkdS0gjDosCG401CYr0tOAMmX6uAJNUg oQOE6TX47wYMYI3nDUdjCJ4RuAa4bRqbCTWxzv+uiVz6Vc7cGZK3HpU/HdOuF9XG15jW DEhOCL8k+EsAeBldH+lgzyvVDHOXZDf65T50+mtU8XL/6qq7kvBganUMpI+E9wGSqNLe zHSQ== X-Gm-Message-State: ALoCoQmDrgJZP3saa1CeFEI2QbF0ABFFM+mPABJDtFZAMVShNpphpjeD+U2G/Udnqihl+DQIxPYX X-Received: by 10.180.101.194 with SMTP id fi2mr2774709wib.2.1412620714002; Mon, 06 Oct 2014 11:38:34 -0700 (PDT) X-BeenThere: std-proposals@isocpp.org Original-Received: by 10.152.26.72 with SMTP id j8ls111537lag.105.gmail; Mon, 06 Oct 2014 11:38:32 -0700 (PDT) X-Received: by 10.152.25.129 with SMTP id c1mr27701793lag.14.1412620712250; Mon, 06 Oct 2014 11:38:32 -0700 (PDT) Original-Received: from plane.gmane.org (plane.gmane.org. [80.91.229.3]) by mx.google.com with ESMTPS id sd8si25343816lbb.36.2014.10.06.11.38.32 for (version=TLSv1 cipher=RC4-SHA bits=128/128); Mon, 06 Oct 2014 11:38:32 -0700 (PDT) Received-SPF: pass (google.com: domain of gclcip-std-proposals@m.gmane.org designates 80.91.229.3 as permitted sender) client-ip=80.91.229.3; Original-Received: from list by plane.gmane.org with local (Exim 4.69) (envelope-from ) id 1XbDAv-0003yE-67 for std-proposals@isocpp.org; Mon, 06 Oct 2014 20:38:25 +0200 Original-Received: from cpe-67-240-43-113.nycap.res.rr.com ([67.240.43.113]) by main.gmane.org with esmtp (Gmexim 0.1 (Debian)) id 1AlnuQ-0007hv-00 for ; Mon, 06 Oct 2014 20:38:25 +0200 Original-Received: from mw_triad by cpe-67-240-43-113.nycap.res.rr.com with local (Gmexim 0.1 (Debian)) id 1AlnuQ-0007hv-00 for ; Mon, 06 Oct 2014 20:38:25 +0200 X-Injected-Via-Gmane: http://gmane.org/ Original-Lines: 30 Original-X-Complaints-To: usenet@ger.gmane.org X-Gmane-NNTP-Posting-Host: cpe-67-240-43-113.nycap.res.rr.com User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:31.0) Gecko/20100101 Thunderbird/31.1.1 In-Reply-To: X-Original-Sender: mw_triad@users.sourceforge.net X-Original-Authentication-Results: mx.google.com; spf=pass (google.com: domain of gclcip-std-proposals@m.gmane.org designates 80.91.229.3 as permitted sender) smtp.mail=gclcip-std-proposals@m.gmane.org 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:13715 Archived-At: On 2014-10-06 14:16, Vlad from Moscow wrote: > Also some containers as for example associative containers have member > function count. So using general function with the same name will only > confuse users. Why do you think that? As I already stated, I consider this a *feature*. "count" returns a number of elements. There are / would be several possible ways to invoke "count": - std::count(container) ...counts items in - std::count(container, predicate) ...counts items in that match - std::count(begin, end) ...counts items in [, ) - std::count(begin, end, predicate) ...counts items in [, ) that match - container::count() ...counts items in *this - container::count(key) ...counts items in *this that match All we're doing is making the predicate optional (with an omitted predicate meaning "always"). I fail to see how this is in any way whatsoever confusing. (Compare to using "size" to sometimes mean memory size in bytes and sometimes mean number of elements...) -- Matthew -- --- 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/. .