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 languages Syntax (Toggle Plain Text) 
 
 
 
class A{
.....
.....
Public:
   copy(){
      return *(this); 
   }
 
}
 
class A{
.....
.....
Public:
   copy(){
      return *(this); 
   }

}
 
 
 

 
 
 Help with Code Tags 
 
 languages Syntax (Toggle Plain Text) 
 
 
 
list<A> list;
A* a = new A(...);
list.push_back(a->copy());
 
list<A> list;
A* a = new A(...);
list.push_back(a->copy());
 
 
 

list<A*> ls;
A *a = new A( ... );
ls.push_back( a );

#include <iostream>
#include <string>
#include <list>
#include <cstring>
using namespace std;
 
int counter = 0;
 
class A {
  private:
    char *deep_data;
    int count;
 
  public:
    A( bool make_me_deep ) {
      count = counter++;
      cout << "Constructor: " << count << " as " << (make_me_deep ? "deep." : "shallow.") << endl;
 
      if (make_me_deep) {
        deep_data = new char[ 1000 ];
        strcpy( deep_data, "Knight to C3" );
        }
      else              deep_data = NULL;
      }
 
    ~A() {
      cout << "Destructor: " << count << endl;
      if (deep_data) delete[] deep_data;
      }
 
    A( const A& a ) {
      // simulate default copy constructor
      deep_data = a.deep_data;
      count     = a.count + 10;
 
      cout << "copied " << a.count << " as " << count << endl;
      }
 
//    A copy() {
    A &copy() {
      return *(this);
      }
 
    void hello() {
      char *s;
      if (deep_data) s = deep_data;
      else           s = "Does that cloud look like a flower to you?";
      cout << endl << count << " says \"" << s << '\"' << endl;
      }
 
    void deepmodify() {
      sprintf( deep_data, "%s%d%s",
        "PWND BY ",
        count,
        "!!!!"
        );
      }
  };
 
int main() {
  list<A> ls;
  A *a;
 
  cout << "(Create shallow and shallow copy it)" << endl;
  a = new A( false );
 
  ls.push_back( a->copy() );
 
  delete a;
 
  ls.front().hello();
 
 
  cout << "\n(Create deep and shallow copy it)" << endl;
  a = new A( true );
 
  ls.push_back( a->copy() );
 
  ls.back().hello();
 
  cout << "\n(Modify the original deep here)" << endl;
  a->deepmodify();
 
  ls.back().hello();
 
  cout << "\n(Delete the original deep)" << endl;
  delete a; // Danger Will Robinson!
 
  ls.back().hello();
 
  cout << "\n(Well, that last statement from 11 should have" << endl
       << "caused a core-dump. Lucky you you're still here." << endl
       << "So, enjoy the automatic cleanup of the list<A>):" << endl;
 
  return 0;
  }