public static CSVData AddColumn(CSVData data, string key, List <string> rows)
{
CSVData ret = new CSVData(data);
ret.AddColumn(key, rows);
return(ret);
}
public static CSVData AddColumn(CSVData data, string key, Func <RowType, string> func)
{
CSVData ret = new CSVData(data);
ret.AddColumn(key, func);
return(ret);
}