Hence a Sortable list is a list with extra sorting methods The base list class can be any of the List implementations of Chapter 6. We use a template parameter class called Record to stand for entries of the sortable list C Record objects can be compared to each other or to a Key by first converting the record objects to their◆Hence a Sortable_list is a List with extra sorting methods. ◆The base list class can be any of the List implementations of Chapter 6. ◆We use a template parameter class called Record to stand for entries of the Sortable_list. ◆Record objects can be compared to each other or to a Key by first converting the Record objects to their