Method sub

include/stringzilla/stringzilla.hpp:2989–2991

* @brief Equivalent to Python's `"abc"[-3:-1]`. Exception-safe, unlike STL's `substr`. * Supports signed and unsigned intervals. @b Doesn't copy or allocate memory! */

     *          Supports signed and unsigned intervals. @b Doesn't copy or allocate memory!
     */
    string_view sub(difference_type start, difference_type end = npos) const noexcept sz_lifetime_bound_ {
        return view().sub(start, end);
    }
    string_span sub(difference_type start, difference_type end = npos) noexcept sz_lifetime_bound_ {
        return span().sub(start, end);
    }