461     fn from_iter<I: IntoIterator<Item = T>>(i: I) -> Self {  in from_iter()  argument
472     fn extend<I: IntoIterator<Item = T>>(&mut self, i: I) {  in extend()  argument
480     fn from_iter<I: IntoIterator<Item = Pair<T, P>>>(i: I) -> Self {  in from_iter()  argument
491     fn extend<I: IntoIterator<Item = Pair<T, P>>>(&mut self, i: I) {  in extend()  argument
501     I: Iterator<Item = Pair<T, P>>,  in do_extend()  argument
519     type Item = T;  typedef
534     type Item = &'a T;  typedef
543     type Item = &'a mut T;  typedef
568     type Item = Pair<&'a T, &'a P>;  typedef
570     fn next(&mut self) -> Option<Self::Item> {  in next()  argument
583     fn next_back(&mut self) -> Option<Self::Item> {  in next_back()  argument
618     type Item = Pair<&'a mut T, &'a mut P>;  typedef
620     fn next(&mut self) -> Option<Self::Item> {  in next()  argument
633     fn next_back(&mut self) -> Option<Self::Item> {  in next_back()  argument
658     type Item = Pair<T, P>;  typedef
660     fn next(&mut self) -> Option<Self::Item> {  in next()  argument
673     fn next_back(&mut self) -> Option<Self::Item> {  in next_back()  argument
710     type Item = T;  typedef
712     fn next(&mut self) -> Option<Self::Item> {  in next()  argument
722     fn next_back(&mut self) -> Option<Self::Item> {  in next_back()  argument
753 trait IterTrait<'a, T: 'a>: Iterator<Item = &'a T> + DoubleEndedIterator + ExactSizeIterator {
786     type Item = &'a T;  typedef
788     fn next(&mut self) -> Option<Self::Item> {  in next()  argument
798     fn next_back(&mut self) -> Option<Self::Item> {  in next_back()  argument
810     type Item = &'a T;  typedef
812     fn next(&mut self) -> Option<Self::Item> {  in next()  argument
821     fn next_back(&mut self) -> Option<Self::Item> {  in next_back()  argument
847     I: DoubleEndedIterator<Item = &'a T>
848         + ExactSizeIterator<Item = &'a T>
864     inner: Box<NoDrop<dyn IterMutTrait<'a, T, Item = &'a mut T> + 'a>>,
868     DoubleEndedIterator<Item = &'a mut T> + ExactSizeIterator<Item = &'a mut T>
892     type Item = &'a mut T;  typedef
894     fn next(&mut self) -> Option<Self::Item> {  in next()  argument
904     fn next_back(&mut self) -> Option<Self::Item> {  in next_back()  argument
916     type Item = &'a mut T;  typedef
918     fn next(&mut self) -> Option<Self::Item> {  in next()  argument
927     fn next_back(&mut self) -> Option<Self::Item> {  in next_back()  argument
943     I: DoubleEndedIterator<Item = &'a mut T> + ExactSizeIterator<Item = &'a mut T> + 'a,