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

[Hewill Kang via libcxx-commits]

hewillk wrote:

You seem to be missing the CTAD for `std::extents`, which is also in the paper's wording.

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