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

[A. Jiang via libcxx-commits]

https://github.com/frederick-vs-ja commented:

I've merely looked [LWG4468](https://wg21.link/lwg4468) (#189838) for now.

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