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It looks like a kind of reflection. According to my understanding, the=20
function that you purposed can be implemented with the=20
`std::enum_traits<E>::enumerators::get<I>::identifier` which was purposed=
=20
in N4428 <http://www.open-std.org/JTC1/SC22/WG21/docs/papers/2015/n4428.pdf=
>
..

=E5=9C=A8 2015=E5=B9=B47=E6=9C=8813=E6=97=A5=E6=98=9F=E6=9C=9F=E4=B8=80 UTC=
+8=E4=B8=8B=E5=8D=884:17:44=EF=BC=8CFrancis Andre=E5=86=99=E9=81=93=EF=BC=
=9A
>
> Hi=20
>
> I am proposing to add a implicit member function to the enum type or=20
> enum class type whose purpose would be to return the literal used to=20
> define each enumerated value. For example=20
>
> enum class Color { red, blue, yellow};=20
> Color color =3D Color::yellow;=20
>
> cout << "color=3D" << color.literal()  << endl;=20
>
> would output=20
>
> color=3Dyellow=20
>
> 1/ the literal fonction could be produced automaticaly by the compiler:=
=20
> const char* literal();=20
> 2/ it should be generated only if it is referenced in the user's code=20
> 3/ when the value of the enum type variable is out of the range of the=20
> enumerated value, the returned string could be "???" since "???" is not=
=20
> a acceptable name for a enumerated.=20
> 4/ It does not break any previous code=20
>
> The main interest of this function is to ligthen the explicitation of=20
> the encoding of an user's defined enum, specificaly when the enum has a=
=20
> large number of values.=20
>
> FA=20
>

--=20

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<div dir=3D"ltr"><br>It looks like a kind of reflection. According to my un=
derstanding, the function that you purposed can be implemented with the `st=
d::enum_traits&lt;E&gt;::enumerators::get&lt;I&gt;::identifier` which was p=
urposed in <a href=3D"http://www.open-std.org/JTC1/SC22/WG21/docs/papers/20=
15/n4428.pdf">N4428</a>.<br><br>=E5=9C=A8 2015=E5=B9=B47=E6=9C=8813=E6=97=
=A5=E6=98=9F=E6=9C=9F=E4=B8=80 UTC+8=E4=B8=8B=E5=8D=884:17:44=EF=BC=8CFranc=
is Andre=E5=86=99=E9=81=93=EF=BC=9A<blockquote class=3D"gmail_quote" style=
=3D"margin: 0;margin-left: 0.8ex;border-left: 1px #ccc solid;padding-left: =
1ex;">Hi
<br>
<br>I am proposing to add a implicit member function to the enum type or=20
<br>enum class type whose purpose would be to return the literal used to=20
<br>define each enumerated value. For example
<br>
<br>enum class Color { red, blue, yellow};
<br>Color color =3D Color::yellow;
<br>
<br>cout &lt;&lt; &quot;color=3D&quot; &lt;&lt; color.literal() =C2=A0&lt;&=
lt; endl;
<br>
<br>would output
<br>
<br>color=3Dyellow
<br>
<br>1/ the literal fonction could be produced automaticaly by the compiler:=
=20
<br>const char* literal();
<br>2/ it should be generated only if it is referenced in the user&#39;s co=
de
<br>3/ when the value of the enum type variable is out of the range of the=
=20
<br>enumerated value, the returned string could be &quot;???&quot; since &q=
uot;???&quot; is not=20
<br>a acceptable name for a enumerated.
<br>4/ It does not break any previous code
<br>
<br>The main interest of this function is to ligthen the explicitation of=
=20
<br>the encoding of an user&#39;s defined enum, specificaly when the enum h=
as a=20
<br>large number of values.
<br>
<br>FA
<br></blockquote></div>

<p></p>

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