[libcxx-commits] [libcxx] [libc++] P3029R1: Better `mdspan`'s CTAD (PR #87873)

[Hristo Hristov via libcxx-commits]

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Zingam wrote:

IMO Definitely not in the forward declarations header. 

Maybe something like in that PR of mine. Do you have tests for that concept?
You probably should prefix it with __libcpp. I am not the final authority on the matter though.
https://github.com/llvm/llvm-project/pull/78086/files

https://github.com/llvm/llvm-project/pull/87873