Method Finish

cpp/src/arrow/io/memory.cc:89–94

bool BufferOutputStream::closed() const { return !is_open_; }

Result<std::shared_ptr<Buffer>> BufferOutputStream::Finish() {
  RETURN_NOT_OK(Close());
  buffer_->ZeroPadding();
  is_open_ = false;
  return std::move(buffer_);
}

Result<int64_t> BufferOutputStream::Tell() const { return position_; }