Re: STL list::iterator problem

From:

Alberto Ganesh Barbati <AlbertoBarbati@libero.it>

Newsgroups:

comp.lang.c++.moderated

Date:

25 Nov 2006 17:32:41 -0500

Message-ID:

<RaW9h.56971$Fk1.108987@twister2.libero.it>

jayesah@gmail.com ha scritto:

template <class T> class MyIterator : public list<T>::iterator
{
public:
MyIterator() { };

You don't need the ";" at the end. In fact ";" is tolerated there just
because it accounts for an "empty declaration".

    ~MyIterator() { };

     MyIterator(list<T>& mylist) {

      /* What I should write here */
     };

       MyIterator(list<T>& mylist)
          : list<T>::iterator(mylist.begin())
       {}

};

This ";" is needed though ;-)

int main()
{
    list<int> mylist;
    mylist.push_back(1);
    mylist.push_back(2);

/* I want to support following construct */

   MyIterator iter(mylist);
   cout <<*mylist;

         return 0;
}

Can anybody please guide me what I should write in one parameter
constructor ? Or do you have all together different solution ?

The reason I derived MyIterator from list<T>::iterator is that I want
to support all the overloaded operator that list<T>::iterator supports.

Just a question, once you start using this kind of iterator, how would
you detect that you reached the end of the list?

Ganesh

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