[libcxx-commits] [libcxx] Libcxx nth element small ranges (PR #215698)

[Louis Dionne via libcxx-commits]

https://github.com/ldionne requested changes to this pull request.

Thanks a lot for the patch! I left some comments. This is a great start, let's iterate a bit.

https://github.com/llvm/llvm-project/pull/215698