220 34164 article Path: news.gmane.org!.POSTED!not-for-mail From: Nevin Liber Newsgroups: gmane.comp.lang.c++.isocpp.proposals Subject: Re: Re: Idea: Extension of structured bindings to definition of structs Date: Sun, 27 Aug 2017 00:20:46 -0500 Lines: 82 Approved: news@gmane.org Message-ID: References: <59dcbbbc-c536-4b7b-9c88-0638fb0cd58a@technion.ac.il> <7b9bf263-d3ca-42bf-aed6-4c7606782a28@isocpp.org> <1762295.OciJaA9sdk@tjmaciei-mobl1> Reply-To: std-proposals@isocpp.org NNTP-Posting-Host: blaine.gmane.org Mime-Version: 1.0 Content-Type: multipart/alternative; boundary="f403045ffe9297f4130557b559b2" X-Trace: blaine.gmane.org 1503811297 26434 195.159.176.226 (27 Aug 2017 05:21:37 GMT) X-Complaints-To: usenet@blaine.gmane.org NNTP-Posting-Date: Sun, 27 Aug 2017 05:21:37 +0000 (UTC) To: "std-proposals@isocpp.org" Original-X-From: std-proposals+bncBCE35H5S6IDBBWFNRHGQKGQER3DREOI@isocpp.org Sun Aug 27 07:21:32 2017 Return-path: Envelope-to: gclcip-std-proposals@m.gmane.org Original-Received: from mail-pg0-f71.google.com ([74.125.83.71]) by blaine.gmane.org with esmtp (Exim 4.84_2) (envelope-from ) id 1dlq0h-0006BF-I0 for gclcip-std-proposals@m.gmane.org; Sun, 27 Aug 2017 07:21:23 +0200 Original-Received: by mail-pg0-f71.google.com with SMTP id 4sf26533261pgi.15 for ; Sat, 26 Aug 2017 22:21:30 -0700 (PDT) ARC-Seal: i=2; a=rsa-sha256; t=1503811289; cv=pass; d=google.com; s=arc-20160816; b=JAeUBhACNdhwr4RzPXxjIBUWsd20sIzCI09/nDBmnLIBrVhQ6/irSicd1Xj3q86ohB c7o6qbm+wyyjh/CeYUTTusOoo6ZaGNX8hq4WqKPsm+Ndr0Wzx/PYkEdjx/a7Tnj78xZh en8HuElWl5IAPbLlF/TCmLFsn0C3vo084ysgAZ3Im87fIZpZbvIlLFROIPzrWemtXkvz i37/7XwgItSm2X8HJi3O81XkrGpFSaUhl0R+nZ56TPp/v2wGuMJzET0LeDlmDvdMx6Fo SedaNGcfmL+86FjfiCxMZ5fqeXKHc99SUw9m3pXhufnAhMb2nFj5QzV0vIsaTcDan8rt g5VA== ARC-Message-Signature: i=2; a=rsa-sha256; c=relaxed/relaxed; d=google.com; s=arc-20160816; h=list-unsubscribe:list-subscribe:list-archive:list-help:list-post :list-id:mailing-list:precedence:reply-to:to:subject:message-id:date :from:references:in-reply-to:sender:mime-version :arc-authentication-results:arc-message-signature :arc-authentication-results; bh=LWplBh+InQTDXaZ47Bmeicm/Dk2rAzBPPjub6dzWF/o=; b=0LHbQDJaz4zuCtLkqkFbAib2mNdoF7+J4f6P6P+MH058/cfrCxeI3griaq6JBxmg7U r69Y2EC5HdZw/rggtzYII+EjX+Kj3acO/fLsK1Ym5+ggepeV1b3Jjjk2Xoe3DrRYzP88 3Z0hSPHLmcOkdMGbRgAmGZnaI+rh5aNMoBJ08ripZAXHU6tlhcnj/oSP70azSuj7JENs WRtHhCYAQBrA6vvc3Ffle0XvlotCux4XDB+EtLwJT0/gyD+VmlDZvI4rD6YTAYwKWKve +rZAjg9AcZtPRCos7A6rhDkSZALpmz0xzNRvyUTtSAOUmrk92G33pn8uWkZKXpyYYsrx zeuQ== ARC-Authentication-Results: i=2; mx.google.com; dkim=pass header.i=@gmail.com header.s=20161025 header.b=gYIvVrrj; spf=pass (google.com: domain of nliber@gmail.com designates 2607:f8b0:400e:c00::236 as permitted sender) smtp.mailfrom=nliber@gmail.com X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:mime-version:sender:in-reply-to:references:from :date:message-id:subject:to:x-original-sender :x-original-authentication-results:reply-to:precedence:mailing-list :list-id:x-spam-checked-in-group:list-post:list-help:list-archive :list-subscribe:list-unsubscribe; bh=LWplBh+InQTDXaZ47Bmeicm/Dk2rAzBPPjub6dzWF/o=; b=fENQXV5tQ3i2P/6BVSUgw/yUtxVvF81+jW2XEBsy00f0cTjg0y0h9O09M6Uc2VN2z0 0svFCZzTooURKUxeHeba0TAAyevp91XEKdimIiMFADd9JcAxTyq9aGenr29nnKdIvTS5 uX4e4Jw6Nm1zpAxi9RXHoRFNk/nlEmtKFCwFe7PQ1la1VAUtMKSo65kRfb77uf3mUIfR 0Y55B9T40Tdr4XEZoFts1bGcPHPtOXO3RBdzMEI7czhlNWtUkWHGf6v0LazNc4ZKGNxo mCvAa25yQe/GlrfEjEgN2Ryl5Zeo4E/I7qoE73mDdtM8kvndpSb8HIW/+X8XSE6vCqTX WS4Q== X-Gm-Message-State: AHYfb5gPv3Z5qpTa6usg2fdrVjn85VAGjjc2LiMwBJ6/m+HmywkNtQX4 gCIGD9iBRC6Cow== X-Received: by 10.99.96.151 with SMTP id u145mr2753486pgb.162.1503811289534; Sat, 26 Aug 2017 22:21:29 -0700 (PDT) X-BeenThere: std-proposals@isocpp.org Original-Received: by 10.36.68.196 with SMTP id o187ls2997353ita.15.canary-gmail; Sat, 26 Aug 2017 22:21:28 -0700 (PDT) X-Received: by 10.98.155.70 with SMTP id r67mr751791pfd.204.1503811288153; Sat, 26 Aug 2017 22:21:28 -0700 (PDT) ARC-Seal: i=1; a=rsa-sha256; t=1503811288; cv=none; d=google.com; s=arc-20160816; b=Dytnx6IFvz9XzPdFCfwzCJyJKa7Ljzg/+CgOXa6KeJGW2AQaYRe5s1oTSf9HlaZPLV CSd6XaJxfAejlLGT0ukDtHBbwJEhf0iD45/O8mQdrVrnKVMl1voRZ31YXL2f9FiAXvOM 5cGTJFPQ9xNqGfGM866bGX5bm8D+GeGTbMH2QALFCnUjwESePW0i+FcG5k2w0RldwoND IwNprvZ0Dff6Ntiy4rgU+vzpIsXDH2RO3Pibx50MODB9DR4YQMZK8OtRnV9AC6RP8QQl yiXBCp8Y4e/+EM2syVjTA1lTTOhGnhbHrkl6aFgFNGdMuGPrzD5pbzzIn+V4iaxGTDYd KSJQ== ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=google.com; s=arc-20160816; h=to:subject:message-id:date:from:references:in-reply-to:sender :mime-version:dkim-signature:arc-authentication-results; bh=MfyfoERkaYlZ/v8Wccxy4gX/sazV35CllYT+kmyV5jI=; b=VCI/xDjCsT0ym3BF3T10foW3m1uMO/qgC+Wb15VBbD8uAQa2Buu0VYfl4PkRicHjz/ Mzc2XF36Ns4XJHJpcnw+UoPANTSQqez8yOCn4n6gIeJCCfbT9YjJyssrFmPfbuN/CkMX Z/fq6rWPnGOGhDuER632pQJdp/A9t+PqmXZ2PDZ6ixRNmywG3c3YQuCr9VxomBIxOaBz K04khU0+NtZ/52r1c9aQLWk5acHSBbvOZdMmCh5qwwWn7cA5OYkFgaw+o3GgnoM6RXD5 AetQp0stSZDFk9UfLjRf6cCzAc3Se8yAu78MwV6zfKCKseWATIuF/x4vGv5VVJOIVe68 JUiQ== ARC-Authentication-Results: i=1; mx.google.com; dkim=pass header.i=@gmail.com header.s=20161025 header.b=gYIvVrrj; spf=pass (google.com: domain of nliber@gmail.com designates 2607:f8b0:400e:c00::236 as permitted sender) smtp.mailfrom=nliber@gmail.com Original-Received: from mail-pf0-x236.google.com (mail-pf0-x236.google.com. [2607:f8b0:400e:c00::236]) by mx.google.com with ESMTPS id 2si8001644plb.500.2017.08.26.22.21.28 for (version=TLS1_2 cipher=ECDHE-RSA-AES128-GCM-SHA256 bits=128/128); Sat, 26 Aug 2017 22:21:28 -0700 (PDT) Received-SPF: pass (google.com: domain of nliber@gmail.com designates 2607:f8b0:400e:c00::236 as permitted sender) client-ip=2607:f8b0:400e:c00::236; Original-Received: by mail-pf0-x236.google.com with SMTP id h75so6787490pfh.1 for ; Sat, 26 Aug 2017 22:21:28 -0700 (PDT) X-Received: by 10.84.231.197 with SMTP id g5mr4103957pln.346.1503811287379; Sat, 26 Aug 2017 22:21:27 -0700 (PDT) Original-Sender: nliber@gmail.com Original-Received: by 10.100.133.80 with HTTP; Sat, 26 Aug 2017 22:20:46 -0700 (PDT) In-Reply-To: <1762295.OciJaA9sdk@tjmaciei-mobl1> X-Original-Sender: nevin@eviloverlord.com X-Original-Authentication-Results: mx.google.com; dkim=pass header.i=@gmail.com header.s=20161025 header.b=gYIvVrrj; spf=pass (google.com: domain of nliber@gmail.com designates 2607:f8b0:400e:c00::236 as permitted sender) smtp.mailfrom=nliber@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:34164 Archived-At: --f403045ffe9297f4130557b559b2 Content-Type: text/plain; charset="UTF-8" On Sat, Aug 26, 2017 at 11:11 PM, Thiago Macieira wrote: > On Saturday, 26 August 2017 18:08:11 PDT Nicol Bolas wrote: > > I have a tuple. Why would I not just *use the tuple*? > > Because tuples are horrible. From > https://www.kdab.com/tuple-pair-cpp-apis/ > > "Quick: When you design C++ APIs, when and how should you use pair and > tuple? > The answer is as simple as it is surprising: Never. Ever." > > And yet some people will. So when interacting with those API, you need to > "correct" it with proper names. > Prior to C++17 I'd agree, but we haven't have structured bindings in the language long enough to know how big an issue it still is. -- Nevin ":-)" Liber +1-847-691-1404 -- 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/CAGg_6%2BM9JX4fsGD0mt9v0pEswz%2BK1vf554Ey4OdPULc30ntbJQ%40mail.gmail.com. --f403045ffe9297f4130557b559b2 Content-Type: text/html; charset="UTF-8" Content-Transfer-Encoding: quoted-printable
On Sat, Aug 26, 2017 at 11:11 PM, Thiago Macieira <thia= go@macieira.org> wrote:
On Saturday, 26 August 2= 017 18:08:11 PDT Nicol Bolas wrote:
> I have a tuple. Why would I not just *use the tuple*?

Because tuples are horrible. From
=C2=A0 =C2=A0 =C2=A0 =C2=A0 https://www.kdab.com/tuple-pair-cpp-apis/

"Quick: When you design C++ APIs, when and how should you use pair and= tuple?
The answer is as simple as it is surprising: Never. Ever."

And yet some people will. So when interacting with those API, you need to "correct" it with proper names.

Prior to C++17 I'd agree, but we haven't have structured binding= s in the language long enough to know how big an issue it still is.
--
=C2=A0Nevin ":-)" L= iber=C2=A0 <mailto:nevin@eviloverlord.com> =C2=A0+1-847-691-1404

--
You received this message because you are subscribed to the Google Groups &= quot;ISO C++ Standard - Future Proposals" group.
To unsubscribe from this group and stop receiving emails from it, send an e= mail to std-proposa= ls+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/CAGg_6%2BM9JX= 4fsGD0mt9v0pEswz%2BK1vf554Ey4OdPULc30ntbJQ%40mail.gmail.com.
--f403045ffe9297f4130557b559b2-- .