boost::text::operator+
// In header: <boost/text/unencoded_rope.hpp> template<typename Char, typename String, typename T> basic_unencoded_rope< Char, String > operator+(T const & x, basic_unencoded_rope< Char, String > ur);
Creates a new basic_unencoded_ropex and t, where x is an object for which ur = x is well-formed.