/** Copy constructor.
* @param src is a Dlist whose contents are copied to this Dlist.
*/
Dlist::Dlist(const Dlist& src) : List(src) {
makeSpace(); init();
for (index x = src.first(); x != 0; x = src.next(x))
pred[x] = src.pred[x];
}
/** Copy constructor.
* @param src is a Dlist whose contents are copied to this Dlist.
*/
Dlist::Dlist(const Dlist& src) : List(src) {
makeSpace(); init();
for (index x = src.first(); x != 0; x = src.next(x))
pred[x] = src.pred[x];
}
