37     struct node {  struct
40         node* prev;  argument
41         node* next;  argument
42         node(T t, T2 t2,node* p, node* n) :  in node()  function
45     node* head;
46     node* tail;
47     node* tmp;
69             node* temp(head);  in ~Map()
149     tail = new node(data, data2,tail, NULL);  in insert()
168     node* prevnode = tmp;  in erase()
169     node *tempnode;  in erase()
223     node *tempnode;  in eraseall()