#include <boost/mpl/int.hpp>
#include <boost/mpl/for_each.hpp>
#include <boost/mpl/vector_c.hpp>
#include <iostream>
#include <iterator>

using namespace boost;

template< typename Iterator >
struct copy {
    copy( Iterator iter ): m_iter( iter ) {}
    template< typename U >
    void operator()( U u ) {
        *(m_iter++) = u;
    }
    Iterator m_iter;
};

int main() {
    typedef boost::mpl::vector_c<int,2,4,6> values;
    int output[3];
    mpl::for_each< values >( copy<int*>(&output[0]) );
    std::copy( &output[0], &output[3], std::ostream_iterator<int>( std::cout, " " ) );
}