return s;
}
+
+ const_iterator iterator_at(size_t i) const
+ {
+ return (i == size()) ? end() : const_iterator(iterCont_[i]);
+ }
+
+ iterator iterator_at(size_t i)
+ {
+ return (i == size()) ? end() : iterCont_[i];
+ }
+
private:
void recreateVector()
{