Function IsNull

cpp/src/arrow/array/array_base.h:58–58

\brief Return true if value at index is null. Does not boundscheck

  /// \brief Return true if value at index is null. Does not boundscheck
  bool IsNull(int64_t i) const { return !IsValid(i); }

  /// \brief Return true if value at index is valid (not null). Does not
  /// boundscheck