123 typedef _IteratorCategory iterator_category;
124 typedef void value_type;
131 _Iterator2 _M_second;
137 const _Iterator3& __third)
140 _M_second = __second;
175 operator _Iterator3()
const
181 _M_first = __other._M_first;
182 _M_second = __other._M_second;
183 _M_third = __other._M_third;
188 operator+(difference_type __delta)
const
190 _M_third + __delta); }
194 {
return _M_first - __other._M_first; }