Method operator+

src/fl/stl/basic_string.h:83–83

        iterator operator--(int) FL_NOEXCEPT { iterator tmp = *this; --ptr; return tmp; }

        iterator operator+(difference_type n) const FL_NOEXCEPT { return iterator(ptr + n); }
        iterator operator-(difference_type n) const FL_NOEXCEPT { return iterator(ptr - n); }
        iterator& operator+=(difference_type n) FL_NOEXCEPT { ptr += n; return *this; }
        iterator& operator-=(difference_type n) FL_NOEXCEPT { ptr -= n; return *this; }