220 25838 <9cd77438-d69f-4942-8c65-70cb4c0633b5@isocpp.org> article Path: news.gmane.org!not-for-mail From: NDos Dannyu Newsgroups: gmane.comp.lang.c++.isocpp.proposals Subject: Multidimentional std::initializer_list deduction Date: Sat, 7 May 2016 16:33:32 -0700 (PDT) Lines: 52 Approved: news@gmane.org Message-ID: <9cd77438-d69f-4942-8c65-70cb4c0633b5@isocpp.org> Reply-To: std-proposals@isocpp.org NNTP-Posting-Host: plane.gmane.org Mime-Version: 1.0 Content-Type: multipart/mixed; boundary="----=_Part_2295_619751627.1462664012612" X-Trace: ger.gmane.org 1462664049 20164 80.91.229.3 (7 May 2016 23:34:09 GMT) X-Complaints-To: usenet@ger.gmane.org NNTP-Posting-Date: Sat, 7 May 2016 23:34:09 +0000 (UTC) To: ISO C++ Standard - Future Proposals Original-X-From: std-proposals+bncBCX7FRO67EHRBTPWXG4QKGQEDVJUH5A@isocpp.org Sun May 08 01:34:05 2016 Return-path: Envelope-to: gclcip-std-proposals@m.gmane.org Original-Received: from mail-pa0-f69.google.com ([209.85.220.69]) by plane.gmane.org with esmtp (Exim 4.69) (envelope-from ) id 1azBjA-0008Kx-Kn for gclcip-std-proposals@m.gmane.org; Sun, 08 May 2016 01:33:40 +0200 Original-Received: by mail-pa0-f69.google.com with SMTP id yl2sf210137542pac.2 for ; Sat, 07 May 2016 16:33:35 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=isocpp-org.20150623.gappssmtp.com; s=20150623; h=date:from:to:message-id:subject:mime-version: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=9enYEYwvCiCxaJoArHuM25V5MBLMMD/ipEDaRkKn/rM=; b=NP0938jn7EFtMlBW+Ie15gXgj+vzI8W/Px5EUu5G2kSG7xlyUpqCqAmsC5gO+z4jSV rMCI7HtCjipQkv8SlBNPL6x7mU3mBZUnR3DSNh8pfyh/n0pa2wodnAy1xYq3vuZR2yQ0 8Qkjzl8ygWQuKY41JLhqZ9NnnbSGyEVFMsUmMYHl0CakrsZWMxi76EPmNoESLRC8kjbM AH2lLcaqsSZiqIExN4Bll99g8jXYRdJj9hqhSgJfRsuLWd8EWNj7vtfLhkwRUDwjhrz0 ZJiSWS7RFuiryzFcWNV/Kg2H+axcHLt/4CThdJaD9AQm9W0UVNhYcglKj9918wz2hCtK +uSQ== 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:message-id:subject:mime-version :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=9enYEYwvCiCxaJoArHuM25V5MBLMMD/ipEDaRkKn/rM=; b=c9qtrHbGHQ7Wl/ux3KIbKxzCAHL6dG5Mo+OLhAqtX972QND3VPGpMufo9SapUfoBUp kzUgMw46zKicHZ5dKLP/sYP64sv8IfmnWUJCQLZ0Q5yFtlkuhCKNdiDjtF7XG162OPGq UfWreg2UI8B0+mUYSIsRZ94+WgYebr6I7tJ0EOXIqtiGlVDcrxkqVthBm8rquI6+Yu5O SVi3zRaQw6KaITh09q7/zilQdtADhBccDRZHgLkdDGncxcGq22jf8oBOSIgjMr35r+5Z XGauyNcs/6vdi7fX3Vvi5/u5kNplzhGb20Qx4wgkAoJwYii+xz+7ywbZ/u3BziLq8oEC phOw== X-Gm-Message-State: AOPr4FWIiARENIFq2nM8gfoNh7q/A6oZG1BtqTPfveFlTa6N91OHN9xa5rWC/XyOaaoOBg== X-Received: by 10.66.220.168 with SMTP id px8mr18426059pac.32.1462664014594; Sat, 07 May 2016 16:33:34 -0700 (PDT) X-BeenThere: std-proposals@isocpp.org Original-Received: by 10.107.39.136 with SMTP id n130ls1389511ion.26.gmail; Sat, 07 May 2016 16:33:33 -0700 (PDT) X-Received: by 10.50.185.137 with SMTP id fc9mr49530igc.0.1462664013265; Sat, 07 May 2016 16:33:33 -0700 (PDT) X-Original-Sender: ndospark320@naver.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:25838 Archived-At: ------=_Part_2295_619751627.1462664012612 Content-Type: multipart/alternative; boundary="----=_Part_2296_984746579.1462664012612" ------=_Part_2296_984746579.1462664012612 Content-Type: text/plain; charset=UTF-8 I noticed *std::initializer_list* can be deduced to *auto* only one rank. *auto i = {{0}, {0, 1}};* // expected i to be std::initializer_list> *std::vector> v{{0}, {0, 1}};* // but the list initialization like this is legal. So, I simply suggest *std::initializer_list* to be able to deduced to *auto* multiple ranks. -- 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/9cd77438-d69f-4942-8c65-70cb4c0633b5%40isocpp.org. ------=_Part_2296_984746579.1462664012612 Content-Type: text/html; charset=UTF-8 Content-Transfer-Encoding: quoted-printable
I noticed std::initializer_list can be deduced= to auto only one rank.
auto i =3D {{0}, {0, 1}}; /= / expected i to be std::initializer_list<std::initializer_list<int>= ;>
std::vector<std::vector<int>> v{{0}, {0, 1}}= ; // but the list initialization like this is=C2=A0legal.
So,= I simply suggest std::initializer_list to be able to deduced to = auto multiple ranks.

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