Extra quotes when customizing to_json for map keys about glaze HOT 2 CLOSED

Found a workaround for now:

template <>
struct glz::meta<Foo>
{
    static constexpr auto custom_write = true;
    static constexpr auto value = enumerate(Foo::eABC);
};

This basically tricks glaze into treating Foo as a glaze_enum_t which goes into the string-ish branch of write_pair_content. I should mention that in my actual use case for this, the enum comes from a third party lib and has hundreds of values and the enum to string function is not constexpr, so using the enumerate_no_reflect function on its own will not work. It's sufficient to just do a enumerate() with a single enum value which is enough to get glaze to treat it like an enum.

from glaze.

Another solution for your original code is to use the .raw option in glz::opts when writing. The .raw option writes out string-like values without quotes.

This line: write<json>::op<Opts>(fooName(foo), args...);
becomes:
write<json>::op<opt_true<Opts, &opts::raw>>(fooName(foo), args...);

glz::opt_true is used as a helper for setting the appropriate boolean at compile time of the templated options, so that the rest of the options get properly passed through.

Here's a working example on compiler explorer of your code: https://gcc.godbolt.org/z/jsf6W57oa

from glaze.