[libcxx-commits] [libcxx] [libcxx] Implement `std::constant_wrapper` (PR #191695)

[Hristo Hristov via libcxx-commits]

H-G-Hristov wrote:

@huixie90 I only skimmed over quickly. I think some parts need to be annotated with `[[nodiscard]]` in compliance with: https://libcxx.llvm.org/CodingGuidelines.html#apply-nodiscard-where-relevant and it would be best to do it for new features right out of the box .

https://github.com/llvm/llvm-project/pull/191695