Method AppendEmptyValue

cpp/src/arrow/array/builder_primitive.h:128–133

\brief Append a empty element

  /// \brief Append a empty element
  Status AppendEmptyValue() final {
    ARROW_RETURN_NOT_OK(Reserve(1));
    data_builder_.UnsafeAppend(value_type{});  // zero
    UnsafeAppendToBitmap(true);
    return Status::OK();
  }

  /// \brief Append several empty elements
  Status AppendEmptyValues(int64_t length) final {