Method off

util/generic/strbase.h:77–79

* @param Pointer to character inside the string, or nullptr. * @return Offset from string beginning (in chars), or npos on nullptr. */

     * @return                          Offset from string beginning (in chars), or npos on nullptr.
     */
    inline size_t off(const TCharType* ret) const noexcept {
        return ret ? (size_t)(ret - Ptr()) : npos;
    }

    inline size_t IterOff(const_iterator it) const noexcept {
        return begin() <= it && end() > it ? size_t(it - begin()) : npos;