#include <boost/mpl/vector.hpp>

#include <boost/mpl/transform_view.hpp>

#include <boost/mpl/filter_view.hpp>

#include <boost/type_traits/is_pointer.hpp>

#include <boost/type_traits/remove_pointer.hpp>

#include <boost/mpl/equal.hpp>

#include <boost/mpl/placeholders.hpp>

#include <boost/mpl/assert.hpp>

#include <boost/static_assert.hpp>

namespace mpl = boost::mpl;

using namespace mpl::placeholders;

typedef mpl::vector<int, int*, long&, long**> Seq;

typedef

mpl::transform_view<

mpl::filter_view< Seq, boost::is_pointer<_1> >

, boost::remove_pointer<_1>

>

pointees;

BOOST_MPL_ASSERT((mpl::equal<mpl::vector<int,long*>,pointees>));