Function num_fields

cpp/src/arrow/type.h:159–159

\brief Return the number of children fields associated with this type.

  /// \brief Return the number of children fields associated with this type.
  int num_fields() const { return static_cast<int>(children_.size()); }

  /// \brief Apply the TypeVisitor::Visit() method specialized to the data type
  Status Accept(TypeVisitor* visitor) const;