I have this function: $```$template

Iterator DoublyLinkedList::end$()\{$

Iterator iter;

iter.curr $=$ nullptr; $//$ Point the iterator to nullptr $($past the end$)$

iter.pastTheEnd $=$ true; $//$ Set past$\_$the$\_$end to true

return iter;

$\}.$ But I need iter.curr to point to the tail, not nullptr. I currently don't have the tail initialized. How can I initialize the tail, and set iter.curr to point to the tail?