Method fill

include/magic_enum/magic_enum_containers.hpp:421–425

  [[nodiscard]] constexpr size_type max_size() const noexcept { return a.max_size(); }

  constexpr void fill(const V& value) {
    for (auto& v : a) {
      v = value;
    }
  }

  constexpr void swap(array& other) noexcept(std::is_nothrow_swappable_v<V>) {
    for (std::size_t i = 0; i < a.size(); ++i) {