205     pub fn cursor<'a, C: Comparator<K>>(  in cursor()  function
254             cursor: self.cursor(forest, comp),  in range()
705     cursor: MapCursor<'a, K, V, C>,  field
733                 self.cursor.next()  in next()
737                         self.cursor.goto(k);  in next()
738                         Some((self.cursor.key()?, self.cursor.value()?))  in next()
741                         self.cursor.goto(k);  in next()
743                             .cursor  in next()
745                             .is_some_and(|key| self.cursor.comp.cmp(k, key).is_eq())  in next()
747                             self.cursor.next()  in next()
749                             Some((self.cursor.key()?, self.cursor.value()?))  in next()
753                         let val = self.cursor.goto_first()?;  in next()
754                         Some((self.cursor.key()?, val))  in next()
766                 self.cursor.goto_end();  in next()
784                 self.cursor.prev()  in next_back()
787                     Bound::Included(k) => match self.cursor.goto(k) {  in next_back()
788                         Some(_) => Some((self.cursor.key()?, self.cursor.value()?)),  in next_back()
789                         None => self.cursor.prev(),  in next_back()
792                         self.cursor.goto(k);  in next_back()
794                             .cursor  in next_back()
796                             .is_some_and(|key| self.cursor.comp.cmp(k, key).is_eq())  in next_back()
798                             self.cursor.prev()  in next_back()
800                             Some((self.cursor.key()?, self.cursor.value()?))  in next_back()
804                         self.cursor.goto_end();  in next_back()
805                         self.cursor.prev()  in next_back()
817                 self.cursor.goto_end();  in next_back()
836             Bound::Included(k) => self.cursor.comp.cmp(key, k).is_ge(),  in is_in_start_bound()
837             Bound::Excluded(k) => self.cursor.comp.cmp(key, k).is_gt(),  in is_in_start_bound()
844             Bound::Included(k) => self.cursor.comp.cmp(k, key).is_ge(),  in is_in_end_bound()
845             Bound::Excluded(k) => self.cursor.comp.cmp(k, key).is_gt(),  in is_in_end_bound()
1374         let mut c = m.cursor(f, &());  in immutable_cursor()