On Tue, Dec 10, 2024 at 5:01 AM Jeremy Rifkin via Std-Proposals
<std-proposals_at_[hidden]> wrote:
> In the specific case of std::views::enumerate, one option would be to
> add a variation that produces unsigned indexes. This, plasters over
> the underlying issue and could lead ot more confusion about mixing,
> however, it would alleviate some issues.
>
> The other option would be a bigger plan to deprecate and remove
> unsigned indexing APIs and replace them with signed APIs:

A third option would be to introduce one or more new types.
For example unsigned types with a bit less and without modulo
semantics, such that they can always convert to signed types. This
would allow you to mix and match these with signed types without
issues.