220 6065 article Path: news.gmane.org!not-for-mail From: the.ultimate.koala@gmail.com Newsgroups: gmane.comp.lang.c++.isocpp.proposals Subject: Re: Re: Allowing constructors to apply initializations to itself? Date: Sun, 1 Sep 2013 03:52:51 -0700 (PDT) Lines: 175 Approved: news@gmane.org Message-ID: References: <6ad60824-1c86-4815-acc9-1212a369379d@isocpp.org> Reply-To: std-proposals@isocpp.org NNTP-Posting-Host: plane.gmane.org Mime-Version: 1.0 Content-Type: multipart/alternative; boundary="----=_Part_2423_18151591.1378032771277" X-Trace: ger.gmane.org 1378032771 32079 80.91.229.3 (1 Sep 2013 10:52:51 GMT) X-Complaints-To: usenet@ger.gmane.org NNTP-Posting-Date: Sun, 1 Sep 2013 10:52:51 +0000 (UTC) Cc: schaub.johannes@googlemail.com To: std-proposals@isocpp.org Original-X-From: std-proposals+bncBDIODEPKWANBBA5ZRSIQKGQEEQ4DWWY@isocpp.org Sun Sep 01 12:52:54 2013 Return-path: Envelope-to: gclcip-std-proposals@m.gmane.org Original-Received: from mail-ve0-f197.google.com ([209.85.128.197]) by plane.gmane.org with esmtp (Exim 4.69) (envelope-from ) id 1VG5H3-0004jU-Ic for gclcip-std-proposals@m.gmane.org; Sun, 01 Sep 2013 12:52:53 +0200 Original-Received: by mail-ve0-f197.google.com with SMTP id ox1sf4189134veb.4 for ; Sun, 01 Sep 2013 03:52:52 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20120113; h=date:from:to:cc:message-id:in-reply-to:references:subject :mime-version:x-original-sender:reply-to:precedence:mailing-list :list-id:list-post:list-help:list-archive:list-subscribe :list-unsubscribe:content-type; bh=T9KetEQ64kSTdsQAK+kKhnoXtrBtC2MQFxiqEg7Fyg4=; b=jklOIKlxPIciadyz2C4m4sWNHL5POTTP0Jt77lnFnxqjxNQMIEy2j/mzzqGNB6VCWd 8/RO4/Vl8YvtgBSkhnGHgGB24C5qPz9SoL6LyNIOvbv/P0841ARPhfu3E9xMGe06PZ4I q9lr192OTfitS39sB1YFqBqwDNtntiPf4Y/f8ZHFsRirDaCC5pLJjP5W8p+QQ77U8t1f 63EecACCZ7g/7GtekbnjPxOjtxyG8TomX9H6fRrAFyAWpl+mCrhCyR8ISxANOMGyIkHG QKZ36SYYm0EZw6KA4rQosz+QIWPEw54JHeBwxfDq2AiWnpN47V5TXDkVs/+2kN/1fibA dCdg== X-Received: by 10.236.109.134 with SMTP id s6mr6194049yhg.32.1378032772226; Sun, 01 Sep 2013 03:52:52 -0700 (PDT) X-BeenThere: std-proposals@isocpp.org Original-Received: by 10.49.30.35 with SMTP id p3ls1907347qeh.97.gmail; Sun, 01 Sep 2013 03:52:51 -0700 (PDT) X-Received: by 10.49.98.162 with SMTP id ej2mr8113qeb.10.1378032771652; Sun, 01 Sep 2013 03:52:51 -0700 (PDT) In-Reply-To: X-Original-Sender: theultimatekoala@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:6065 Archived-At: ------=_Part_2423_18151591.1378032771277 Content-Type: text/plain; charset=ISO-8859-1 Can't you do this by delegating to a private constructor ? struct HelperStruct { A(Manager *m) : A{m->factory(), m->layouter()} { m->prepare(); } shared_ptr factory; shared_ptr layouter: private: A(const shared_ptr& factory_, const shared_ptr& layouter_) : factory{factory_}, layouter{layouter_} { } } On Monday, June 24, 2013 10:19:44 AM UTC+2, Johannes Schaub wrote: > > 2013/6/24 Arthur Tchaikovsky >: > > Hi, perhaps instead of static the default keyword would be more > > appropriate as it will suggest that object will get initialized to its > > default values? > > > > Not necessarily > > struct HelperStruct { > A(Manager *m) > :static A{m->factory(), m->layouter()} { > m->prepare(); > } > > shared_ptr factory; > shared_ptr layouter; > }; > -- --- 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. Visit this group at http://groups.google.com/a/isocpp.org/group/std-proposals/. ------=_Part_2423_18151591.1378032771277 Content-Type: text/html; charset=ISO-8859-1 Content-Transfer-Encoding: quoted-printable
Can't you do this by delegating to a private constructor ?=

&nbs= p;   = struct HelperStruct<= /span> {
      A<= /span>(Manager *m)
        : A{m->factory()= , m= ->layouter()} {
        m->prepare();
      }
 
    &n= bsp; shared_ptr<F= actory>= factory;
    &n= bsp; shared_ptr<F= actory>= layouter<= /span>:
    private:
     = A(const <= /span>shared_ptr<Factory>& factory_,  const shared_ptr<<= span style=3D"color: #606;" class=3D"styled-by-prettify">Factory>& layouter_)
        : factory{factory_}, la= youter{layouter_} {<= /span>
  =     }
=     }
<= /span>



On Monday, June 24, 2013 10:19:44 AM U= TC+2, Johannes Schaub wrote:
20= 13/6/24 Arthur Tchaikovsky <atch...@gmail.com>:
> Hi, perhaps instead of static the default keyword would be more
> appropriate as it will suggest that object will get initialized to= its
> default values?
>

Not necessarily

    struct HelperStruct {
      A(Manager *m)
        :static A{m->factory(), m->layouter()= } {
        m->prepare();
      }

      shared_ptr<Factory> factory;
      shared_ptr<Factory> layouter;
    };

--
 
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