Method string>

inst/include/Rcpp/api/meat/is.h:42–44

        return is_atomic(x) && TYPEOF(x) == LGLSXP;
    }
    template <> inline bool is__simple<std::string>(SEXP x) {
        return is_atomic(x) && TYPEOF(x) == STRSXP;
    }
    template <> inline bool is__simple<String>(SEXP x) {
        return is_atomic(x) && TYPEOF(x) == STRSXP;
    }