[libcxx-commits] [libcxx] WIP [libc++][ranges] P3052R2: `view_interface::at()` (PR #205012)

[Hristo Hristov via libcxx-commits]

Zingam wrote:



> I haven't found any discussion about treating this as DR. Previously, we implemented `span::at` and `mdspan::at` as non-DR additions. If we want to DR-ify `view_interface::at`, IMO we should do the same for `span` and `mdspan`.

If `std::expected.has_error()` is treated as DR, this one should be treated too. Anyway I'll park this until we get the C++29 support.

Thank you for clarifying.

https://github.com/llvm/llvm-project/pull/205012