Method operator!=

inst/include/Rcpp/String.h:605–607

            return get_sexp() == other.get_sexp();
        }
        bool operator!=(const Rcpp::String& other) const {
            return get_sexp() != other.get_sexp();
        }

        bool operator==(const StringProxy& other) const {
            return get_sexp() == other.get();