220 41316 <11be50bf-0922-4328-9006-9c0b2cdbb33b@isocpp.org> article
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From: Barry Revzin <barry.revzin@gmail.com>
Newsgroups: gmane.comp.lang.c++.isocpp.proposals
Subject: Re: allow enums in std::integer_sequence<class T, T...>
Date: Sun, 6 Jan 2019 08:38:12 -0800 (PST)
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On Sunday, January 6, 2019 at 7:55:07 AM UTC-6, hui...@gmail.com wrote:
>
> According to the standard, in std::integer_sequence<class T,T...>, T must 
> be an integer type. However, it would be very useful to allow enums too.
> I can't think of any good reason why enums must be banned there; and in 
> fact std::integral_constant<class T, T> allows T to be an enum type.
>
>
What's the *positive *motivation for the change? What's the use-case for 
allowing enums? 

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<div dir=3D"ltr">On Sunday, January 6, 2019 at 7:55:07 AM UTC-6, hui...@gma=
il.com wrote:<blockquote class=3D"gmail_quote" style=3D"margin: 0;margin-le=
ft: 0.8ex;border-left: 1px #ccc solid;padding-left: 1ex;"><div dir=3D"ltr">=
According to the standard, in std::integer_sequence&lt;class T,T...&gt;, T =
must be an integer type. However, it would be very useful to allow enums to=
o.<div>I can&#39;t think of any good reason why enums must be banned there;=
 and in fact std::integral_constant&lt;class T, T&gt; allows T to be an enu=
m type.</div><div><br></div></div></blockquote><div><br></div><div>What&#39=
;s the <i>positive </i>motivation for the change? What&#39;s the use-case f=
or allowing enums?=C2=A0</div></div>

<p></p>

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