Function FlattenDots

r/src/arrow_types.h:233–239

}

inline cpp11::writable::list FlattenDots(cpp11::list dots, int num_fields) {
  std::vector<SEXP> out(num_fields);
  auto set = [&](int j, SEXP x, cpp11::r_string) { out[j] = x; };
  TraverseDots(dots, num_fields, set);

  return cpp11::writable::list(out.begin(), out.end());
}

arrow::Status InferSchemaFromDots(SEXP lst, SEXP schema_sxp, int num_fields,
                                  std::shared_ptr<arrow::Schema>& schema);