Method ToString

cpp/src/arrow/sparse_tensor.h:290–292

\brief Return a string representation of the sparse index

  /// \brief Return a string representation of the sparse index
  std::string ToString() const override {
    return std::string(SparseIndexType::kTypeName);
  }

  /// \brief Return whether the CSR indices are equal
  bool Equals(const SparseIndexType& other) const {