template<typename E, class AT > inline std::ostream&
operator<<(std::ostream& os, const vector<E,AT>& v)
{
template<typename E, class AT > inline std::ostream&
operator<<(std::ostream& os, const vector<E,AT>& v)
{
template< class XprT > inline std::ostream&
operator<<(std::ostream& os, const et::VectorXpr<XprT>& v)
{
template< class XprT > inline std::ostream&
operator<<(std::ostream& os, const et::VectorXpr<XprT>& v)
{