220 21655 <41738abe-568a-43aa-83b1-d40a8380e0d3@isocpp.org> article Path: news.gmane.org!not-for-mail From: Gor Nishanov 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: Tue, 13 Oct 2015 06:25:22 -0700 (PDT) Lines: 68 Approved: news@gmane.org Message-ID: <41738abe-568a-43aa-83b1-d40a8380e0d3@isocpp.org> References: <639f0012-8cb4-4db3-82a6-8d042a3497f9@isocpp.org> <401aa118-ed0b-4c7b-92cf-3fbd706eff9d@isocpp.org> <1d15dbc4-e0c1-4df1-86db-014e11f14d26@isocpp.org> <56114953.4030701@wanadoo.fr> <561B403D.4030403@gmail.com> <561C07D1.3080304@gmail.com> <8dd3594e-9c16-445e-8d59-fdc48530b8bf@isocpp.org> Reply-To: std-proposals@isocpp.org NNTP-Posting-Host: plane.gmane.org Mime-Version: 1.0 Content-Type: multipart/mixed; boundary="----=_Part_56_1305846630.1444742722813" X-Trace: ger.gmane.org 1444742729 18537 80.91.229.3 (13 Oct 2015 13:25:29 GMT) X-Complaints-To: usenet@ger.gmane.org NNTP-Posting-Date: Tue, 13 Oct 2015 13:25:29 +0000 (UTC) To: ISO C++ Standard - Future Proposals Original-X-From: std-proposals+bncBC47RF4IW4GRBQ4M6SYAKGQEWX5SQQI@isocpp.org Tue Oct 13 15:25:27 2015 Return-path: Envelope-to: gclcip-std-proposals@m.gmane.org Original-Received: from mail-ob0-f198.google.com ([209.85.214.198]) by plane.gmane.org with esmtp (Exim 4.69) (envelope-from ) id 1Zlza1-00079G-IC for gclcip-std-proposals@m.gmane.org; Tue, 13 Oct 2015 15:25:25 +0200 Original-Received: by obbda8 with SMTP id da8sf23671106obb.1 for ; Tue, 13 Oct 2015 06:25:24 -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=PpteRIVAS7gVDV/T10BLMq/2A77UDnI4PGEUm16ay24=; b=RQ0bnosWE4KGXYN+4y09aa5XKkHCZmBiNbKz8SJvVKz6kzq7iXSCkAqYeS5+A3G+Tl pQv2QHxHAd6fKmjTxQsalJhf2LjzZZIV64q6Of7+Fq886FtDKPYDpx95n1waBeY5g9Wc /95ZjuGaGia6t5oggsrijb+SvZpbvWAzR46+pHbSgWSu848DmV+DHI805WPphTVWqoF9 Kk4fmqcoE1teVgzPsS8BE6uFEdm32Bsgz3IYb8WAjOFcyFAdK0urRiAvH9BwPohmRhFa cMzXaxHNS0gUzL6A/0LY6yV1jUpJVsotXzrEwZk9uU7YTj1HaOwXdb7M4SMHEJ4nk//z p0Qw== 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=PpteRIVAS7gVDV/T10BLMq/2A77UDnI4PGEUm16ay24=; b=iJWYeshtYRB+ygzQJZvBQSMpqHEDxJexYcpexRMVvUNb+4dGD/Mx+a/CnN7E8lHygY aC4Ei1l08U4nMxrnrUoYiKXlI9BJL0e0ueI3YyzoIhZfg4Au1UpQ0s2wWABNjSZ1KoEA IKeOCL3/TPixCQ0hxEhRc6LDRMtDxPYBCO/mDZaFdgB637gKqDj/2UhTgoZGNYtY/Jnn 2Lp/TiFTExjTjOwXH2qtHac9rX/tvLABG2JG6zw1urVNdjIRFctlWBIyiHo1zCE4F+2/ eJRJrtNN4hpjjG9e4CV5Ead5DyzUEELo/0l6imntKvEPCYy8ODkVZoz94XovhKvn5c3P tiUA== X-Gm-Message-State: ALoCoQkhVtFso+srxkK5ESTag6llNnUcnUsobQIBKuIAUSXoHQjUrcRmbzIUN3aPBarIMWMukOTb X-Received: by 10.182.106.228 with SMTP id gx4mr28457192obb.34.1444742724289; Tue, 13 Oct 2015 06:25:24 -0700 (PDT) X-BeenThere: std-proposals@isocpp.org Original-Received: by 10.50.117.97 with SMTP id kd1ls1395094igb.19.gmail; Tue, 13 Oct 2015 06:25:23 -0700 (PDT) X-Received: by 10.50.225.70 with SMTP id ri6mr124313igc.9.1444742723386; Tue, 13 Oct 2015 06:25:23 -0700 (PDT) In-Reply-To: <8dd3594e-9c16-445e-8d59-fdc48530b8bf@isocpp.org> X-Original-Sender: GorNishanov@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:21655 Archived-At: ------=_Part_56_1305846630.1444742722813 Content-Type: multipart/alternative; boundary="----=_Part_57_1122194364.1444742722813" ------=_Part_57_1122194364.1444742722813 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: quoted-printable On Tuesday, October 13, 2015 at 4:58:01 AM UTC-7, Germ=C3=A1n Diago wrote: > > This is my main concern with the proposal: type-erasure and allocations. > Seems that there are some fancy optimizations possible, but I am not sure > why we should rely on these when there are other alternatives. > At the moment, there is NO alternative that can match zero-overhead of the= =20 P0057. If you believe there is one, I offered you earlier in this thread a= =20 way how you can validate whether you belief is true or not. --=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_57_1122194364.1444742722813 Content-Type: text/html; charset=UTF-8 Content-Transfer-Encoding: quoted-printable


On Tuesday, October 13, 2015 at 4:58:01 AM UTC-7, = Germ=C3=A1n Diago wrote:
This is my main concern with the proposal: type-erasure and= allocations.
Seems that there are some fancy optimizations possible, bu= t I am not sure
why we should rely on these when there are other alterna= tives.

At the moment, there= is NO=C2=A0alternative that can match zero-overhead of the P0057. If you b= elieve there is one, I offered you earlier in this thread a way how you can= validate whether you belief is true or not.

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