Method push_back

cpp/src/arrow/util/small_vector.h:376–379

  void clear() { storage_.clear(); }

  void push_back(const T& value) {
    storage_.bump_size(1);
    storage_.storage_ptr()[storage_.size_ - 1].construct(value);
  }

  void push_back(T&& value) {
    storage_.bump_size(1);