[libcxx-commits] [libcxx] [libc++] ranges::fold_right_last (PR #195533)

[A. Jiang via libcxx-commits]

frederick-vs-ja wrote:

> I wasn't fully sure if I had to return an optional or not as std document says it should return an optional but the other pr creating a fold_right does not return an optional.

The other PR implemented a different algorithm. Please ensure that the return type is same as that specified in the standard.

https://github.com/llvm/llvm-project/pull/195533