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I had an idea that is akin to std::tuple_element and std::tuple_size
although it would obviously require compiler magic rather than a library
implementation.

An example:

enum class foo {
  bar, baz, quux
};

static_assert(std::enum_size<foo>::value == 3);
static_assert(std::enum_element<0, foo>::value == foo::bar);
static_assert(std::enum_element<1, foo>::value == foo::baz);
static_assert(std::enum_element<2, foo>::value == foo::quux);

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<div dir=3D"ltr"><div><div><div>I had an idea that is akin to std::tuple_el=
ement and std::tuple_size although it would obviously require compiler magi=
c rather than a library implementation.<br><br></div>An example:<br><br></d=
iv>enum class foo {<br></div>=C2=A0 bar, baz, quux<br><div>};<br><br></div>=
<div>static_assert(std::enum_size&lt;foo&gt;::value =3D=3D 3);<br>static_as=
sert(std::enum_element&lt;0, foo&gt;::value =3D=3D foo::bar);<br>static_ass=
ert(std::enum_element&lt;1, foo&gt;::value =3D=3D foo::baz);<br>static_asse=
rt(std::enum_element&lt;2, foo&gt;::value =3D=3D foo::quux);<br><br></div><=
/div>

<p></p>

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