220 15873 <CAGg_6+Paf5Pui_XbPVOig+oGNpsZm_exjwqMa7YA815OytNqNg@mail.gmail.com> article
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From: Nevin Liber <nevin@eviloverlord.com>
Newsgroups: gmane.comp.lang.c++.isocpp.proposals
Subject: Re: RFC: Adding Coherency Between any and optional<T>
Date: Mon, 26 Jan 2015 14:16:41 -0600
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On 24 January 2015 at 13:15, Miro Knejp <miro.knejp@gmail.com> wrote:

>  Here are some observations:
>
>    - Do we need the distinction between nullopt_t and none_t? Can't we
>    use none_t/none as a universal tag type to specify "nothing" in the
>    standard library and replace nullopt_t with none_t in the draft?
>
>
Given that just about any time we conflate two separate notions onto one
syntax, people generally dislike it (forwarding references vs. r-value
references, "unifed" initialization syntax, etc.), what is the use case for
conflating nullopt_t and none_t into one type?  I'm not seeing it.  Please
provide motivation.
-- 
 Nevin ":-)" Liber  <mailto:nevin@eviloverlord.com>  (847) 691-1404

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<div dir=3D"ltr">On 24 January 2015 at 13:15, Miro Knejp <span dir=3D"ltr">=
&lt;<a href=3D"mailto:miro.knejp@gmail.com" target=3D"_blank">miro.knejp@gm=
ail.com</a>&gt;</span> wrote:<br><div class=3D"gmail_extra"><div class=3D"g=
mail_quote"><blockquote class=3D"gmail_quote" style=3D"margin:0 0 0 .8ex;bo=
rder-left:1px #ccc solid;padding-left:1ex">
 =20
   =20
 =20
  <div bgcolor=3D"#FFFFFF" text=3D"#000000">
    Here are some observations:<br>
    <ul>
      <li>Do we need the distinction between nullopt_t and none_t? Can&#39;=
t
        we use none_t/none as a universal tag type to specify &quot;nothing=
&quot;
        in the standard library and replace nullopt_t with none_t in the
        draft?</li></ul></div></blockquote><div><br></div><div>Given that j=
ust about any time we conflate two separate notions onto one syntax, people=
 generally dislike it (forwarding references vs. r-value references, &quot;=
unifed&quot; initialization syntax, etc.), what is the use case for conflat=
ing nullopt_t and none_t into one type?=C2=A0 I&#39;m not seeing it.=C2=A0 =
Please provide motivation.</div></div>-- <br><div class=3D"gmail_signature"=
>=C2=A0Nevin &quot;:-)&quot; Liber=C2=A0 &lt;mailto:<a href=3D"mailto:nevin=
@eviloverlord.com" target=3D"_blank">nevin@eviloverlord.com</a>&gt;=C2=A0 (=
847) 691-1404</div>
</div></div>

<p></p>

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