343     len: usize,  field
360             new.len = self.len;  in clone()
406         kdebug!("This tree size = {:?}, begin:-------------", self.len());  in print_tree()
419         if self.len() != other.len() {  in eq()
606     len: usize,  field
621         if self.len == 0 {  in next()
637         self.len -= 1;  in next()
642         (self.len, Some(self.len))  in size_hint()
649         if self.len == 0 {  in next_back()
661         self.len -= 1;  in next_back()
685     len: usize,  field
694             len: self.len,  in clone()
704         if self.len == 0 {  in next()
714         self.len -= 1;  in next()
719         (self.len, Some(self.len))  in size_hint()
727         if self.len == 0 {  in next_back()
737         self.len -= 1;  in next_back()
761     len: usize,  field
770             len: self.len,  in clone()
780         if self.len == 0 {  in next()
790         self.len -= 1;  in next()
795         (self.len, Some(self.len))  in size_hint()
802         if self.len == 0 {  in next_back()
812         self.len -= 1;  in next_back()
827                 len: self.len,  in into_iter()
833                 len: self.len,  in into_iter()
846             len: 0,  in new()
852     pub fn len(&self) -> usize {  in len()  method
853         self.len  in len()
1022         self.len += 1;  in insert()
1301         self.len -= 1;  in delete()
1402             len: self.len,  in iter()
1413             len: self.len,  in iter_mut()
1424         assert_eq!(m.len(), 0);  in test_insert()
1426         assert_eq!(m.len(), 1);  in test_insert()
1428         assert_eq!(m.len(), 2);  in test_insert()
1430         assert_eq!(m.len(), 3);  in test_insert()
1439         assert_eq!(m.len(), 0);  in test_replace()
1441         assert_eq!(m.len(), 1);  in test_replace()
1443         assert_eq!(m.len(), 1);  in test_replace()
1450         assert_eq!(m.len(), 0);  in test_clone()
1452         assert_eq!(m.len(), 1);  in test_clone()
1454         assert_eq!(m.len(), 2);  in test_clone()
1459         assert_eq!(m2.len(), 2);  in test_clone()
1473         assert_eq!(m.len(), 0);  in test_empty_iter()
1569         assert_eq!(m.len(), 0);  in test_remove()
1587         assert_eq!(m.len(), 3);  in test_pop()
1589         assert_eq!(m.len(), 2);  in test_pop()
1591         assert_eq!(m.len(), 1);  in test_pop()
1602         assert_eq!(m.len(), 32);  in test_iterate()
1618         assert_eq!(keys.len(), 3);  in test_keys()
1629         assert_eq!(values.len(), 3);  in test_values()
1643         assert_eq!(values.len(), 3);  in test_values_mut()
1788         assert_eq!(a.len(), 3);  in test_extend_iter()