Method Extend

r/src/r_to_arrow.cpp:249–251

  virtual Status Append(SEXP) { return Status::NotImplemented("Append"); }

  virtual Status Extend(SEXP values, int64_t size, int64_t offset = 0) {
    return Status::NotImplemented("Extend");
  }

  // by default, just delay the ->Extend(), i.e. not run in parallel
  // implementations might redefine so that ->Extend() is run in parallel