Method Hash

cpp/src/arrow/type.cc:919–924

}

size_t DataType::Hash() const {
  static constexpr size_t kHashSeed = 0;
  size_t result = kHashSeed;
  internal::hash_combine(result, this->fingerprint());
  return result;
}

std::ostream& operator<<(std::ostream& os, const DataType& type) {
  os << type.ToString();