P2830R10 `type_order`

[StephanTLavavej]

WG21-P2830R10 type_order

Feature-test macro (expected):

#define __cpp_lib_type_order 202506L

Note: We're focused on implementing the remaining library-only features in C++23. Until that's done, we will NOT be accepting PRs for C++26 features.

[frederick-vs-ja]

I guess we can rely on the order of __FUNCSIG__ or __FUNCDNAME__ of _Internal_func<T> (so-called CTTI), which doesn't require further compiler support.

[StephanTLavavej]

I'd be concerned by such an approach, since it would seem to be pushing that non-Standard feature further than it was originally intended. I'd want to check with the compiler team(s) first to figure out their preferred approach for throughput and long-term maintainability.