[libcxx-commits] [libcxx] [libc++] Document guidelines for applying [[nodiscard]] (PR #84000)

[Nikolas Klauser via libcxx-commits]

philnik777 wrote:

If anybody wants to add any more places we should add `[[nodiscard]]` feel free to open a new PR. I didn't see any feedback against the places proposed here, so I'm landing this now.

https://github.com/llvm/llvm-project/pull/84000