listassignop.cpp

Data Abstraction & Problem Solving with C++源码

#include "List.h"

// Assumes the following line added to List.h in public part
// List & operator=(const List &rhs)
// and existence of member functions removeAll and copyListNodes
// void removeAll();
// void copyListNodes(const List& aList);

List & List::operator=(const List& rhs)
{
   // check for assignment to self
   if (this != &rhs)
   {  removeAll();    // deallocate left-hand side
      copyListNodes(rhs); // copy list nodes
      size = rhs.size;    // copy size of list
   }  // end if
   return *this;
} // end operator=