std::is_bounded_array - Man Page

typedef integral_constant< _Tp, __v > type
typedef _Tp value_type

constexpr operator value_type () const noexcept
constexpr value_type operator() () const noexcept

static constexpr _Tp value

struct std::is_bounded_array< _Tp >"True for a type that is an array of known bound.

Since

C++20