220 12478 <040716B3-CF41-46C7-AA1C-CB49818FA5EF@gmail.com> article Path: news.gmane.org!not-for-mail From: David Krauss Newsgroups: gmane.comp.lang.c++.isocpp.proposals Subject: Re: Placeholder literals Date: Mon, 25 Aug 2014 12:50:18 +0800 Lines: 72 Approved: news@gmane.org Message-ID: <040716B3-CF41-46C7-AA1C-CB49818FA5EF@gmail.com> References: <570663A9-F617-442F-9B48-5B6E7311AE72@gmail.com> Reply-To: std-proposals@isocpp.org NNTP-Posting-Host: plane.gmane.org Mime-Version: 1.0 (Mac OS X Mail 7.3 \(1878.6\)) Content-Type: multipart/alternative; boundary="Apple-Mail=_429400B8-08BB-454E-8319-63B8D14CF017" X-Trace: ger.gmane.org 1408942242 20006 80.91.229.3 (25 Aug 2014 04:50:42 GMT) X-Complaints-To: usenet@ger.gmane.org NNTP-Posting-Date: Mon, 25 Aug 2014 04:50:42 +0000 (UTC) To: std-proposals@isocpp.org Original-X-From: std-proposals+bncBCW25A7E3QCRBGEB5OPQKGQE2EJJ43A@isocpp.org Mon Aug 25 06:50:35 2014 Return-path: Envelope-to: gclcip-std-proposals@m.gmane.org Original-Received: from mail-pa0-f70.google.com ([209.85.220.70]) by plane.gmane.org with esmtp (Exim 4.69) (envelope-from ) id 1XLmEk-0002wZ-6L for gclcip-std-proposals@m.gmane.org; Mon, 25 Aug 2014 06:50:34 +0200 Original-Received: by mail-pa0-f70.google.com with SMTP id lf10sf113525995pab.1 for ; Sun, 24 Aug 2014 21:50:33 -0700 (PDT) X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20130820; h=x-gm-message-state:from:message-id:mime-version:subject:date :references:to: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=qvwz0kYPgLR4OKDLG71i3sgzmVIduvrakJXosoHjB+A=; b=jn3BrTLnplocXLRIgd1afCPnXhLyn5N31iQsyihiXuN6SpedsDBjfV57/HwnWJKSdR wMmzxH6fCPEfe2YIncetDUZcs/zzhjbvC09m+F8QSymZzTNrdhmvMxjBUAzFKvgCXlqJ hjGFS9T9B+oJyImXLVduLRtEc9sSCygN9Iv+OS8LSyQiyoF04VE9dbdyDyRDtNcPNtJN /p15AzfJw6haXoF6K+qWmcByc7Oi7uhKhjjm7akD4SW552rHr433iJqLMISkdUf8Fn7q 5N5sXGIG9AKMU9gP2qP+990rcG9boLLoPNWRUBbVtKEO6jVK9Pe9uze8xCTdH4jV5np1 tFAw== X-Gm-Message-State: ALoCoQlFFIlMZ0Q7T3+sSBDfMmfamypJ9YVJJGWD1vCrqjXsAH6ZS13J2srYIoYTkTE5j1srnAxJ X-Received: by 10.66.144.102 with SMTP id sl6mr12991947pab.17.1408942233113; Sun, 24 Aug 2014 21:50:33 -0700 (PDT) X-BeenThere: std-proposals@isocpp.org Original-Received: by 10.50.61.148 with SMTP id p20ls1023515igr.38.canary; Sun, 24 Aug 2014 21:50:32 -0700 (PDT) X-Received: by 10.70.38.161 with SMTP id h1mr25119521pdk.105.1408942232380; Sun, 24 Aug 2014 21:50:32 -0700 (PDT) Original-Received: from mail-pa0-x22d.google.com (mail-pa0-x22d.google.com [2607:f8b0:400e:c03::22d]) by mx.google.com with ESMTPS id rw4si9867560pab.168.2014.08.24.21.50.32 for (version=TLSv1 cipher=ECDHE-RSA-RC4-SHA bits=128/128); Sun, 24 Aug 2014 21:50:32 -0700 (PDT) Received-SPF: pass (google.com: domain of potswa@gmail.com designates 2607:f8b0:400e:c03::22d as permitted sender) client-ip=2607:f8b0:400e:c03::22d; Original-Received: by mail-pa0-f45.google.com with SMTP id eu11so20146322pac.18 for ; Sun, 24 Aug 2014 21:50:32 -0700 (PDT) X-Received: by 10.70.63.37 with SMTP id d5mr23913855pds.51.1408942232196; Sun, 24 Aug 2014 21:50:32 -0700 (PDT) Original-Received: from [172.20.10.2] ([121.54.54.129]) by mx.google.com with ESMTPSA id u2sm36026154pbs.42.2014.08.24.21.50.30 for (version=TLSv1 cipher=ECDHE-RSA-RC4-SHA bits=128/128); Sun, 24 Aug 2014 21:50:31 -0700 (PDT) In-Reply-To: X-Mailer: Apple Mail (2.1878.6) X-Original-Sender: potswa@gmail.com X-Original-Authentication-Results: mx.google.com; spf=pass (google.com: domain of potswa@gmail.com designates 2607:f8b0:400e:c03::22d as permitted sender) smtp.mail=potswa@gmail.com; dkim=pass header.i=@gmail.com; dmarc=pass (p=NONE 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:12478 Archived-At: --Apple-Mail=_429400B8-08BB-454E-8319-63B8D14CF017 Content-Type: text/plain; charset=ISO-8859-1 On 2014-08-25, at 12:45 PM, Richard Smith wrote: > On Sat, Aug 23, 2014 at 6:21 PM, David Krauss wrote: > Why not add literal operator templates returning placeholders? > > Why not deprecate std::bind? Generic lambdas provide a better solution, and we don't benefit from having two ways to do the same thing. Can't say I have a counterargument to that. The last time I used bind was a while ago, to work around a GCC bug with non-generic lambdas in pack expansions. Currently my project doesn't build in GCC; it segfaults and reports an ICE pointing at a generic lambda. So, that's the use case I know :P . The suggestion was only inspired by seeing a std::placeholder in a StackOverflow question, but the user was misguided and didn't need it. -- --- 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. 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On 2014&= ndash;08–25, at 12:45 PM, Richard Smith <richard@metafoo.co.uk> wrote:

On Sat, Aug 23, 2014 at 6:21 P= M, David Krauss <potswa@gmail.com> wrote:
Why not = add literal operator templates returning placeholders?

Why not deprecate std::bind? Generic lambdas provide a bette= r solution, and we don't benefit from having two ways to do the same thing.=

Can’t say I have = a counterargument to that.

The last time I used bind was a while ago, to work around a GCC bug with non-ge= neric lambdas in pack expansions. Currently my project doesn’t build = in GCC; it segfaults and reports an ICE pointing at a generic lambda. So, t= hat’s the use case I know :P .

The suggestio= n was only inspired by seeing a std::placeholder in a StackOverflow question, but the user was misguided and didn’= t need it.

--

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