220 21255 article Path: news.gmane.org!not-for-mail From: Sean Middleditch Newsgroups: gmane.comp.lang.c++.isocpp.proposals Subject: missing hash_code result in P0029 Date: Sat, 3 Oct 2015 20:25:13 -0700 (PDT) Lines: 58 Approved: news@gmane.org Message-ID: Reply-To: std-proposals@isocpp.org NNTP-Posting-Host: plane.gmane.org Mime-Version: 1.0 Content-Type: multipart/mixed; boundary="----=_Part_982_1917225101.1443929113402" X-Trace: ger.gmane.org 1443929124 2142 80.91.229.3 (4 Oct 2015 03:25:24 GMT) X-Complaints-To: usenet@ger.gmane.org NNTP-Posting-Date: Sun, 4 Oct 2015 03:25:24 +0000 (UTC) Cc: Geoff Romer , Chandler Carruth To: ISO C++ Standard - Future Proposals Original-X-From: std-proposals+bncBCDODCNR2QPRBGVYYKYAKGQE4W7XOFY@isocpp.org Sun Oct 04 05:25:20 2015 Return-path: Envelope-to: gclcip-std-proposals@m.gmane.org Original-Received: from mail-qk0-f199.google.com ([209.85.220.199]) by plane.gmane.org with esmtp (Exim 4.69) (envelope-from ) id 1ZiZvI-0000u4-HD for gclcip-std-proposals@m.gmane.org; Sun, 04 Oct 2015 05:25:16 +0200 Original-Received: by qkhv67 with SMTP id v67sf126593998qkh.1 for ; Sat, 03 Oct 2015 20:25:15 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20120113; h=date:from:to:cc:message-id:subject:mime-version:content-type :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=FXVdshG5KpRwyduUwV2901xm0u2tB+eyCZnNYC42TNc=; b=dxxGZQLQ0wyas+YzZ3HJi1kewV3goC0gniz/NQam1niAG734g4x3+eZ0jRkEXoBGAj +D8qqb7Qjaum4yBDCfoXS0S6mBEPrvllSWS8QY+qZovbzHCNMxBiEZ9YvS6q0kJfEXC+ vsKEr/pWbSoFoGoU3ubRQZnEgox7hbPqgydNmt8z93AdXUlXhUp3/TBgN7iYaglT8P77 wrV2lE4rL6GxzNIHoMH/+laC6DiGkTCFknkbRiL/ZBj853wWEamhdJ3g1+jFAH5TR2nB GcvATLvIiCeOmQHUFK/A8WvDty+tWZhh1fK+hvUgoZtd0zXXMl1aF6DgZ1w63Ju2kxz4 DBTw== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20130820; h=x-gm-message-state:date:from:to:cc:message-id:subject:mime-version :content-type: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=FXVdshG5KpRwyduUwV2901xm0u2tB+eyCZnNYC42TNc=; b=X4Jxxgo6DmwP7hPI1+S/t8YorPFTAjhl17yOuPuWZfNstIAd5uGPHbgH46JC205wDf YMAPa+thuL3rZbywFjCeai4uZSY5PgsXmrRp4OnnzXmbCtsNiQAYcXFlYz/yvXjUEW1y 1Ck9FSD7lpAtOIZztsyKoGPL+PRHnXeZSTQTA8nMVMU2WW4h9N28kpVRxcZV7P+ORbtX KWQb/Lxvll6wkcOOOLuT70r11pVwwCfRL05z5WVcBNvZUzChqE9lYMfG1d7iHeaVHQWr 2IkCoT8o5XXVBgpLJnquWZdoEPBCcelnOdpkKsTrKpkorcFWGsDwZmGVPcFnupi0eHjQ k7GA== X-Gm-Message-State: ALoCoQnhfCaukj1IH8TB7CJRZpm5alFoa3RNlT37qTG6XnFsWWq5PHfmK0eJz+JL7PGRStV2uQqP X-Received: by 10.129.85.149 with SMTP id j143mr20390222ywb.31.1443929115471; Sat, 03 Oct 2015 20:25:15 -0700 (PDT) X-BeenThere: std-proposals@isocpp.org Original-Received: by 10.50.225.34 with SMTP id rh2ls923720igc.34.canary; Sat, 03 Oct 2015 20:25:14 -0700 (PDT) X-Received: by 10.50.114.135 with SMTP id jg7mr37953igb.8.1443929114753; Sat, 03 Oct 2015 20:25:14 -0700 (PDT) X-Original-Sender: Sean.Middleditch@gmail.com Precedence: list Mailing-list: list std-proposals@isocpp.org; contact std-proposals+owners@isocpp.org List-ID: X-Spam-Checked-In-Group: std-proposals@isocpp.org 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:21255 Archived-At: ------=_Part_982_1917225101.1443929113402 Content-Type: multipart/alternative; boundary="----=_Part_983_566940569.1443929113402" ------=_Part_983_566940569.1443929113402 Content-Type: text/plain; charset=UTF-8 Unless I'm missing something (wouldn't surprise me), there's no way specific in the paper for user code to extract the resulting hash from hash_code or the HashCode concept. The sample implementation code has a member result_type alias and an `operator result_type()` but those interfaces are not present in the paper. Seems like a small but rather critical missing piece. :) http://www.open-std.org/jtc1/sc22/wg21/docs/papers/2015/p0029r0.html -- --- 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/. ------=_Part_983_566940569.1443929113402 Content-Type: text/html; charset=UTF-8 Content-Transfer-Encoding: quoted-printable
Unless I'm missing something (wouldn't surpri= se me), there's no way specific in the paper for user code to extract t= he resulting hash from hash_code or the HashCode concept.
The sample implementation code has a member result_type alias a= nd an `operator result_type()` but those interfaces are not present in the = paper.

Seems like a small but rather critical miss= ing piece. :)

http://www.open-std.org/jtc1/sc22/wg= 21/docs/papers/2015/p0029r0.html

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