 [i]     template<class T0, class E0>     BOOST_UBLAS_INLINE     typename enable_if< is_convertible<T0, typename E0::value_type >,     typename vector_binary_scalar0_traits<const T0, E0, scalar_plus<T0, typename E0::value_type> >::result_type     >::type     operator + (const T0 &e0,                 const vector_expression<E0> &e0) {         typedef typename vector_binary_scalar0_traits<const T0, E0, scalar_plus<T0, typename E0::value_type> >::expression_type expression_type;         return expression_type (e0, e0 ());     }      // addition with scalar     // (t + 