boost::text::operator+
// In header: <boost/text/text.hpp> template<nf Normalization, typename Char, typename String, typename T> basic_text< Normalization, Char, String > operator+(T const & x, basic_text< Normalization, Char, String > t);
Creates a new object that is the concatenation of basic_textx and t, where x is an object for which t = x is well-formed.