Question

Hello I would like to ask about:
I have map and list

Questions:

Is the following implementation of distructor right :

   for (map<string,SymbolTableNode*>::iterator i = symbolTable.begin();
                         i != symbolTable.end(); ++i)
   {
       delete i;
   }
   symbolTable.clear();

or I miss some memory?

About list:

   list<MyClass2*> mylist;
   mylist.push_front(new MyClass());
   mylist.pop_front();

does pop invoke delete? or I have memory leakage in this case? If there is the leakage problem then what can I do to avoid it?

Thank you.

Answer 1

Do you really need to have a list of pointers ? Can’t you have a plain list ?

list<MyClass> mylist;
mylist.push_front(MyClass());

It will save you the pain of memory management.

If you need pointers, then use smart pointers or pointer containers from boost : http://www.boost.org/doc/libs/1_46_1/libs/ptr_container/doc/ptr_container.html