220 21865 article Path: news.gmane.org!not-for-mail From: Evgeny Panasyuk Newsgroups: gmane.comp.lang.c++.isocpp.proposals Subject: Re: is await an extension of the do-notation? (was Re: Re: Resumable expressions p0114r0 vs async/await P0057R0) Date: Sun, 18 Oct 2015 00:02:31 -0700 (PDT) Lines: 76 Approved: news@gmane.org Message-ID: References: <639f0012-8cb4-4db3-82a6-8d042a3497f9@isocpp.org> <561C213F.1060009@gmail.com> <561C3875.2050701@gmail.com> <86924069-44d0-447f-bf8a-a42e46579832@isocpp.org> <561D79A7.8080007@gmail.com> <894616d6-9609-4038-b2bc-d2c62df21e0f@isocpp.org> <99bdb3ae-9214-4440-8572-4c47a61eda46@isocpp.org> <58628096-14ae-42b2-89d3-c0bd2183bbc0@isocpp.org> <561DC957.8080603@gmail.com> <510ce172-976a-4e3a-ae68-31fdb40af4d7@isocpp.org> <9dd3f28c-4ffb-4e08-9955-242c46e14527@isocpp.org> <31d5f64f-8db9-4ba3-aca7-872114b9776d@isocpp.org> <561DE488.3040103@gmail.com> <5587a3fd-499c-42b3-bf05-fd5cdc2d9118@isocpp.org> <561EF19E.6010405@gmail.com> <7560dfa8-c77f-41ec-9c0d-c88fe65e20b5@isocpp.org> <97537282-c96c-474d-a157-9d160733cb77@isocpp.org> <56227380.8070408@gmail.com> Reply-To: std-proposals@isocpp.org NNTP-Posting-Host: plane.gmane.org Mime-Version: 1.0 Content-Type: multipart/mixed; boundary="----=_Part_8_1605409407.1445151751226" X-Trace: ger.gmane.org 1445151755 10200 80.91.229.3 (18 Oct 2015 07:02:35 GMT) X-Complaints-To: usenet@ger.gmane.org NNTP-Posting-Date: Sun, 18 Oct 2015 07:02:35 +0000 (UTC) To: ISO C++ Standard - Future Proposals Original-X-From: std-proposals+bncBC54TLGKR4LBBCEIRWYQKGQE3IVJNAQ@isocpp.org Sun Oct 18 09:02:35 2015 Return-path: Envelope-to: gclcip-std-proposals@m.gmane.org Original-Received: from mail-pa0-f72.google.com ([209.85.220.72]) by plane.gmane.org with esmtp (Exim 4.69) (envelope-from ) id 1ZnhzG-0005z6-Od for gclcip-std-proposals@m.gmane.org; Sun, 18 Oct 2015 09:02:34 +0200 Original-Received: by payp3 with SMTP id p3sf59996107pay.1 for ; Sun, 18 Oct 2015 00:02:33 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20120113; h=date:from:to:message-id:in-reply-to:references: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=EvzyBugYK520QOQKdoLtWvoxLNZqT0qPRtzvYyGD+bw=; b=gzYFdCChYRbutGl5rLFS1EUFcTex7dcF1MvMw75yZlqeyLhtKus3G0m5Nw+QLJJNPe yvPuoSrhSKjwSkrTgKHHzhzD2OVX+jmcr3JgMNd814TIXewRo/jat8O0/42i6Bs+BWqE Xt0wx7RH21NeIDkQxLfanqrU2dJbRcFORJSPMHHSjXsyyzn73WwqlHrKn0y8XvIcZh+A sFDJJUrHxi0/RG3l5m5HAEkDfG+8oRmtt9v4L5Orh3MQnCqzS8jbJnDAy3jerS2S0CZL /D8UTrXA+uqOI/inACLfLDTcUdhpWbxm7Gopy/oaERjO9WIlzOeNZxQgA0Ja+FDb/9tz mFiw== 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:in-reply-to:references :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=EvzyBugYK520QOQKdoLtWvoxLNZqT0qPRtzvYyGD+bw=; b=VijuVuUu4LLL1BBJp3l5WW4UvK2tDVczSkEtodtCnc6JEijLBP41y8PCnMy+z02Wwr 7x0xBE0fR25R7hpOvJS1pFvczfUij+NajZGDszZU+1eXVhS6Q9JNXmSonlpcKMZF5HDH nIc6FNTmh6uO8nKdGhXrMcmber00nQEYmQqidjDvsF/F1d47YUdKmk9ZOBzP5YVTYZN4 OJDuUImCSlqBebDkN8H0MgrpN12QjpP2eEc5PwpIR+YxO45dmDis27rMpjj4o+clTICi WMcd2SBw6AvaYhX0tqNN6sUM7rV0h2AjvdGRDOMhHU9PE9TN5HzuuVFj7gc4TnJLBgyb EJew== X-Gm-Message-State: ALoCoQl5Zy3FS2EOJGX1l5D9F09Up8ncV4zac64G+P+GQWaT3qeV7WeF4SeVuaX2cKPwi4VdQ21n X-Received: by 10.66.158.229 with SMTP id wx5mr21039047pab.3.1445151753681; Sun, 18 Oct 2015 00:02:33 -0700 (PDT) X-BeenThere: std-proposals@isocpp.org Original-Received: by 10.107.33.9 with SMTP id h9ls1146402ioh.73.gmail; Sun, 18 Oct 2015 00:02:32 -0700 (PDT) X-Received: by 10.50.17.41 with SMTP id l9mr266187igd.2.1445151752465; Sun, 18 Oct 2015 00:02:32 -0700 (PDT) In-Reply-To: X-Original-Sender: Evgeny.Panasyuk@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:21865 Archived-At: ------=_Part_8_1605409407.1445151751226 Content-Type: multipart/alternative; boundary="----=_Part_9_1341253155.1445151751226" ------=_Part_9_1341253155.1445151751226 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: quoted-printable 17 October 2015 =D0=B3., 19:30:02 UTC+3 Nicol Bolas: > > > * Equal functionality to P0057 (P0114 makes .then continuations difficult= ). > Why? What is principal limitation for .then? =20 > > * Syntax does not favor typed or type-erasure. That is, you pick one base= d=20 > solely on your needs, not on how difficult it is to use (P0114 fails here= ,=20 > as type-erasure requires lots of explicit user effort). > What kind of "lots of explicit user effort"? Does using *ready*=20 std::function for lambdas results in "lots of explicit user effort"? --=20 ---=20 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 e= mail 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-proposa= ls/. ------=_Part_9_1341253155.1445151751226 Content-Type: text/html; charset=UTF-8 Content-Transfer-Encoding: quoted-printable
17 October 2015 =D0=B3., 19:30:02 UTC+3 Nicol Bolas:
* Equal functionality to P0= 057 (P0114 makes .then continuations difficult).

Why? What is principal limitation for .then?
=C2=A0

* Syntax does not favor typed o= r type-erasure. That is, you pick one based solely on your needs, not on ho= w difficult it is to use (P0114 fails here, as type-erasure requires lots o= f explicit user effort).

What kind of "= lots of explicit user effort"? Does using *ready* std::function for la= mbdas results in "lots of explicit user effort"?

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