14 inline static bool isDataFrame(std::shared_ptr<View> view) {
return (toDataFrame(view) !=
nullptr); }
16 inline static std::shared_ptr<DataFrameView> toDataFrame(std::shared_ptr<View> view)
18 return std::dynamic_pointer_cast<DataFrameView>(view);
31 static std::shared_ptr<DataFrameView>
toReadOnly(std::shared_ptr<DataFrameView> dataframe);