Method sat

include/stringzilla/stringzilla.hpp:2968–2968

* @brief Signed alternative to `at()`. Handy if you often write `str[str.size() - 2]`. * @warning The behavior is @b undefined if the position is beyond bounds. */

     *  @warning The behavior is @b undefined if the position is beyond bounds.
     */
    value_type sat(difference_type offset) const noexcept sz_lifetime_bound_ { return view().sat(offset); }
    reference sat(difference_type offset) noexcept sz_lifetime_bound_ { return span().sat(offset); }

    /**