Class is_array

test/doctest.h:973–973

        template <typename T> struct is_pointer<T*> : true_type { };

        template <typename T> struct is_array : false_type { };
        // NOLINTNEXTLINE(*-avoid-c-arrays)
        template <typename T, size_t SIZE> struct is_array<T[SIZE]> : true_type { };
#endif