Just to clarify on typeid: it works specifically on types. Color::Red and
Color::Blue are (expected to be) different values, but they have the same
type 'Color'. Hence why Color::Red or similar would never be printed out.

Regarding actually being able to produce the name of the value, I agree
with Sebastian. Not only is it sometimes desirable to get the name of an
enum class value, but also types (because as Sebastian said, the name in
std::type_info is implementation defined), member variable names, and local
variable names. So realistically, the better solution is not one that is
specific to enum class values, but encompasses at least all mentioned
above. A more fleshed-out proposal for reflection in general would likely
be more preferable.

On Sat, 20 Jul 2019, 21:34 Jonny Grant via Std-Proposals, <
std-proposals_at_[hidden]> wrote:

> Hi Sebastian
>
> Many thanks for your reply. yes, better I avoid using this typeid(), it
> only gives the type.. not the enum class name "Red" I had hoped for etc
>
> Yes, I would prefer to avoid using typeid().
>
> My proposal would be if there could be just a .name() on all 'enum class' ?
>
> Thanks
> Jonny
>
>
> On 20/07/2019 21:27, Sebastian Büttner wrote:
>
> Hi Jonny,
>
> you might want to wait for reflection to do such things.
>
> Relying on the name returned by a std::type_info object is not a save way
> anyway since the returned name is implementation defined.
>
> See: http://eel.is/c++draft/type.info#9 - This is also why you get
> something "strange" like 5Color for your color enum on some
> implementations.
>
> Cheers,
> Sebastian
>
> On 2019-07-20 22:16, Jonny Grant via Std-Proposals wrote:
>
> Hello
>
> Could I ask if enum class has been considered to add a way to get a
> string representation from an enum? ie "Red" and "Blue" below.
> typeid() just returns the enum class name.
>
> Very useful for logs/debugging.
>
> Read the initial link about enum class:
> http://www.stroustrup.com/C++11FAQ.html#enum
>
>
> ie, what I am asking is if for example:
> // g++-8 -Wall -o typeid typeid.cpp
>
> #include <iostream>
> #include <string>
> #include <typeinfo>
>
> enum class Color { Red, Blue };
>
> int main()
> {
> Color c = Color::Red;
>
> std::cout << "my enum is " << typeid(c).name() << std::endl;
>
> std::cout << "my enum is " << c.name() << std::endl;
>
> std::cout << "my enum is " << Color::Blue.name() << std::endl;
> }
>
>
> (if it compiled) the output would be:
>
> my enum is Color
> my enum is Red
> my enum is Blue
>
> But the later two lines do not compile
>
> The first does work, but only gives the type.
>
>
> $ ./typeid
> my enum is 5Color
>
>
> Strange that this one is '5Color'
>
>
>
> Could it be done by the typeid() on enum class?
>
>
> This saves me needing to write for every enum
>
> const char * get_enum_str(Color value);
>
>
> There are a lot of posts online discussing similar
>
>
> https://stackoverflow.com/questions/28828957/enum-to-string-in-modern-c11-c14-c17-and-future-c20
>
>
> Has there been a proposal someone could point me to please?
>
> Jonny
> .
>
>
>
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