On Tue, Mar 1, 2022 at 9:59 AM Arthur O'Dwyer via Std-Proposals <
std-proposals_at_[hidden]> wrote:

> On Tue, Mar 1, 2022 at 10:13 AM Nikolay Mihaylov via Std-Proposals <
> std-proposals_at_[hidden]> wrote:
>
>> Once again, why do we need the size?
>> Shall we check the size?
>> Via static_assert?
>> During runtime?
>>
>
> In the proposed std::get for C arrays, AIUI, the size would be part of the
> signature. It would look like this:
>
> template<size_t X, class T, size_t N> requires (X < N)
> constexpr T& get(T (&arr)[N]) noexcept {
> return arr[X];
> }
>

No, it wouldn't. Paulo's email contained the correct implementation:

template <std::size_t Idx, typename T, std::size_t N>
constexpr T& get(T (&arr)[N]) noexcept
{
    static_assert(Idx < N, "Index out of bounds");
    return arr[Idx];
}

This would match what std::get does for std::array, std::pair, and
std::tuple.

Barry