Method IsNull

be/src/runtime/tuple.h:285–289

  }

  bool IsNull(const NullIndicatorOffset& offset) const {
    const char* null_indicator_byte =
        reinterpret_cast<const char*>(this) + offset.byte_offset;
    return (*null_indicator_byte & offset.bit_mask) != 0;
  }

  /// 'slot_desc' describes a struct slot in this tuple. Sets 'slot_desc' to null in this
  /// tuple and iterates its children and sets all of them to null too. Recursively