STL Sequences & the View Concept

Listing 3: Dereference adaptor.

template <typename StoredIterator, class Compare>
class dereference
{
public:
    typedef StoredIterator first_argument_type;
    typedef StoredIterator second_argument_type;
    typedef typename Compare::result_type result_type;

    dereference(const Compare &comp = Compare())
        : comp_(comp) {}
    result_type operator()(first_argument_type first, 
        second_argument_type second)
    {
        return comp_(*first, *second);
    }
private:
    Compare comp_;
};