Method Segment

tests/cpp/encoder/df_mock.h:100–100

  auto View() const { return enc::HostColumnsView{Span{columns_v_}, segments_, segments_.back()}; }

  auto Segment() const { return Span{segments_}; }
  auto MappingView() { return Span{mapping_}; }
  auto const& Mapping() { return mapping_; }
};