diff --git a/include/rosa/support/csv/CSVReader.hpp b/include/rosa/support/csv/CSVReader.hpp
index 8824fac..3275dc4 100755
--- a/include/rosa/support/csv/CSVReader.hpp
+++ b/include/rosa/support/csv/CSVReader.hpp
@@ -1,802 +1,782 @@
 //===-- rosa/support/csv/CSVReader.hpp --------------------------*- C++ -*-===//
 //
 //                                 The RoSA Framework
 //
 //===----------------------------------------------------------------------===//
 ///
 /// \file rosa/support/csv/CSVReader.hpp
 ///
 /// \author David Juhasz (david.juhasz@tuwien.ac.at)
 ///
 /// \date 2017-2019
 ///
 /// \brief Facitilities to read CSV files.
 ///
 /// \note The implementation is based on the solution at
 /// https://stackoverflow.com/a/1120224
 ///
 //===----------------------------------------------------------------------===//
 
 #ifndef ROSA_SUPPORT_CSV_CSVREADER_HPP
 #define ROSA_SUPPORT_CSV_CSVREADER_HPP
 
 #include "rosa/support/debug.hpp"
 
 #include <istream>
 #include <sstream>
 #include <vector>
 #include <algorithm>
 
 namespace rosa {
 namespace csv {
 
 /// Anonymous namespace providing implementation details for
 /// \c rosa::csv::CSVIterator, consider it private.
 namespace { 
 
 /// Provides facility for parsing values from one row CSV data.
 ///
 /// \tparam T type of values to parse from the line
 /// \tparam IsSignedInt if \p T is a signed integral type, always use default
 /// \tparam IsUnsignedInt if \p T is an unsigned integral type, always use
 /// default
 /// \tparam IsFloat if \p T is a floating-point type, always use default
 /// \tparam IsString if \p T is \c std::string, always use default
 ///
 /// \note Specializations of this `struct` are provided for arithmentic types
 /// and \c std::string.
 template <typename T, bool IsSignedInt = (std::is_integral<T>::value &&
                                           std::is_signed<T>::value),
           bool IsUnsignedInt =
               (std::is_integral<T>::value && std::is_unsigned<T>::value),
           bool IsFloat = std::is_floating_point<T>::value,
           bool IsString = std::is_same<T, std::string>::value>
 struct CSVRowParser;
 
 /// Specialization for signed integral types.
 ///
 /// \tparam T type of values to parse from the line
 ///
 /// \pre \p T is a signed integral type:\code
 /// std::is_integral<T>::value && std::is_signed<T>::value
 /// \endcode
 template <typename T> struct CSVRowParser<T, true, false, false, false> {
   STATIC_ASSERT((std::is_integral<T>::value && std::is_signed<T>::value),
                 "wrong type"); // Sanity check.
 
   /// Parses a given row of CSV data into a given container.
   ///
   /// \p Data is cleared and then filled with values parsed from \p LineStream.
   /// Entries in the line are to be separated by commas, the character `,`. A
   /// trailing comma results in an empty entry at the end of the line. No empty
   /// entry should be present otherwise.
   ///
   /// \note Parsed values are silently converted to type \p T.
   ///
   /// \param [in,out] LineStream the line to parse
   /// \param [in,out] Data the container to store the parsed values
   static void parse(std::stringstream &LineStream, std::vector<T> &Data, char Delimeter = ',') {
     std::string Cell;
     Data.clear();
     while (std::getline(LineStream, Cell, Delimeter)) {
       Data.push_back(static_cast<T>(std::stoll(Cell)));
     }
     // This checks for a trailing comma with no data after it.
     if (!LineStream && Cell.empty()) {
       // If there was a trailing comma then add an empty element.
       Data.push_back(0);
     }
   }
 
   /// Parses a given column of a given row of CSV data into a given container.
   ///
   /// \p Data is cleared and then filled with values parsed from \p LineStream.
   /// Entries in the line are to be separated by commas, the character `,`. A
   /// trailing comma results in an empty entry at the end of the line. No empty
   /// entry should be present otherwise.
   ///
   /// \note Parsed values are silently converted to type \p T.
   ///
   /// \param [in,out] LineStream the line to parse
   /// \param [in,out] Data the container to store the parsed values
   static void parseValue(std::stringstream &LineStream, std::vector<T> &Data, size_t Column = 1, char Delimeter = ',') {
     std::string Cell;
     size_t currentColumn = 1;
     Data.clear();
     while (std::getline(LineStream, Cell, Delimeter)) {
         if(currentColumn == Column){
            Data.push_back(static_cast<T>(std::stoll(Cell)));
            break;
         }
         currentColumn = currentColumn + 1;
     }
     // This checks for a trailing comma with no data after it.
     if (!LineStream && Cell.empty()) {
       // If there was a trailing comma then add an empty element.
       Data.push_back(0);
     }
   }
 };
 
 /// Specialization for unsigned integral types.
 ///
 /// \tparam T type of values to parse from the line
 ///
 /// \pre \p T is an unsigned integral type:\code
 /// std::is_integral<T>::value && std::is_unsigned<T>::value
 /// \endcode
 template <typename T> struct CSVRowParser<T, false, true, false, false> {
   STATIC_ASSERT((std::is_integral<T>::value && std::is_unsigned<T>::value),
                 "wrong type"); // Sanity check.
 
   /// Parses a given row of CSV data into a given container.
   ///
   /// \p Data is cleared and then filled with values parsed from \p LineStream.
   /// Entries in the line are to be separated by commas, the character `,`. A
   /// trailing comma results in an empty entry at the end of the line. No empty
   /// entry should be present otherwise.
   ///
   /// \note Parsed values are silently converted to type \p T.
   ///
   /// \param [in,out] LineStream the line to parse
   /// \param [in,out] Data the container to store the parsed values
   static void parse(std::stringstream &LineStream, std::vector<T> &Data, char Delimeter = ',') {
     std::string Cell;
     Data.clear();
     while (std::getline(LineStream, Cell, Delimeter)) {
       Data.push_back(static_cast<T>(std::stoull(Cell)));
     }
     // This checks for a trailing comma with no data after it.
     if (!LineStream && Cell.empty()) {
       // If there was a trailing comma then add an empty element.
       Data.push_back(0);
     }
   }
 
   /// Parses a given column of a given row of CSV data into a given container.
   ///
   /// \p Data is cleared and then filled with values parsed from \p LineStream.
   /// Entries in the line are to be separated by commas, the character `,`. A
   /// trailing comma results in an empty entry at the end of the line. No empty
   /// entry should be present otherwise.
   ///
   /// \note Parsed values are silently converted to type \p T.
   ///
   /// \param [in,out] LineStream the line to parse
   /// \param [in,out] Data the container to store the parsed values
   static void parseValue(std::stringstream &LineStream, std::vector<T> &Data, size_t Column = 1, char Delimeter = ',') {
     std::string Cell;
     size_t currentColumn = 1;
     Data.clear();
     while (std::getline(LineStream, Cell, Delimeter)) {
         if(currentColumn == Column){
            Data.push_back(static_cast<T>(std::stoll(Cell)));
            break;
         }
         currentColumn = currentColumn + 1;
     }
     // This checks for a trailing comma with no data after it.
     if (!LineStream && Cell.empty()) {
       // If there was a trailing comma then add an empty element.
       Data.push_back(0);
     }
   }
 };
 
 /// Specialization for floating-point types.
 ///
 /// \tparam T type of values to parse from the line
 ///
 /// \pre \p T is a floating-point type:\code
 /// std::is_floating_point<T>::value
 /// \endcode
 template <typename T> struct CSVRowParser<T, false, false, true, false> {
   STATIC_ASSERT((std::is_floating_point<T>::value),
                 "wrong type"); // Sanity check.
 
   /// Parses a given row of CSV data into a given container.
   ///
   /// \p Data is cleared and then filled with values parsed from \p LineStream.
   /// Entries in the line are to be separated by commas, the character `,`. A
   /// trailing comma results in an empty entry at the end of the line. No empty
   /// entry should be present otherwise.
   ///
   /// \note Parsed values are silently converted to type \p T.
   ///
   /// \param [in,out] LineStream the line to parse
   /// \param [in,out] Data the container to store the parsed values
   static void parse(std::stringstream &LineStream, std::vector<T> &Data, char Delimeter = ',') {
     std::string Cell;
     Data.clear();
     while (std::getline(LineStream, Cell, Delimeter)) {
       Data.push_back(static_cast<T>(std::stold(Cell)));
     }
     // This checks for a trailing comma with no data after it.
     if (!LineStream && Cell.empty()) {
       // If there was a trailing comma then add an empty element.
       Data.push_back(0);
     }
   }
 
   /// Parses a given column of a given row of CSV data into a given container.
   ///
   /// \p Data is cleared and then filled with values parsed from \p LineStream.
   /// Entries in the line are to be separated by commas, the character `,`. A
   /// trailing comma results in an empty entry at the end of the line. No empty
   /// entry should be present otherwise.
   ///
   /// \note Parsed values are silently converted to type \p T.
   ///
   /// \param [in,out] LineStream the line to parse
   /// \param [in,out] Data the container to store the parsed values
   static void parseValue(std::stringstream &LineStream, std::vector<T> &Data, size_t Column = 1, char Delimeter = ',') {
     std::string Cell;
     size_t currentColumn = 1;
     Data.clear();
     while (std::getline(LineStream, Cell, Delimeter)) {
         if(currentColumn == Column){
            Data.push_back(static_cast<T>(std::stold(Cell)));
            break;
         }
         currentColumn = currentColumn + 1;
     }
     // This checks for a trailing comma with no data after it.
     if (!LineStream && Cell.empty()) {
       // If there was a trailing comma then add an empty element.
       Data.push_back(0);
     }
   }
 };
 
 /// Specialization for \c std::string.
 ///
 /// \tparam T type of values to parse from the line
 ///
 /// \pre \p T is \c std::string:\code
 /// std::is_same<T, std::string>::value
 /// \endcode
 template <typename T> struct CSVRowParser<T, false, false, false, true> {
   STATIC_ASSERT((std::is_same<T, std::string>::value),
                 "wrong type"); // Sanity check.
 
   /// Parses a given row of CSV data into a given container.
   ///
   /// \p Data is cleared and then filled with values parsed from \p LineStream.
   /// Entries in the line are to be separated by commas, the character `,`. A
   /// trailing comma results in an empty entry at the end of the line. No empty
   /// entry should be present otherwise.
   ///
   /// \param [in,out] LineStream the line to parse
   /// \param [in,out] Data the container to store the parsed values
   static void parse(std::stringstream &LineStream, std::vector<T> &Data, char Delimeter = ',') {
     std::string Cell;
     Data.clear();
     while (std::getline(LineStream, Cell, Delimeter)) {
       Data.push_back(Cell);
     }
     // This checks for a trailing comma with no data after it.
     if (!LineStream && Cell.empty()) {
       // If there was a trailing comma then add an empty element.
       Data.push_back("");
     }
   }
 
   /// Parses a given column of a given row of CSV data into a given container.
   ///
   /// \p Data is cleared and then filled with values parsed from \p LineStream.
   /// Entries in the line are to be separated by commas, the character `,`. A
   /// trailing comma results in an empty entry at the end of the line. No empty
   /// entry should be present otherwise.
   ///
   /// \note Parsed values are silently converted to type \p T.
   ///
   /// \param [in,out] LineStream the line to parse
   /// \param [in,out] Data the container to store the parsed values
   static void parseValue(std::stringstream &LineStream, std::vector<T> &Data, size_t Column = 1, char Delimeter = ',') {
     std::string Cell;
     size_t currentColumn = 1;
     Data.clear();
     while (std::getline(LineStream, Cell, Delimeter)) {
         if(currentColumn == Column){
            Data.push_back(static_cast<T>(std::stoll(Cell)));
            break;
         }
         currentColumn = currentColumn + 1;
     }
     // This checks for a trailing comma with no data after it.
     if (!LineStream && Cell.empty()) {
       // If there was a trailing comma then add an empty element.
       Data.push_back(0);
     }
   }
 };
 
 /// Parses and stores entries from a row of CSV data.
 ///
 /// \tparam T type of values to parse and store, i.e. entries in the row
 ///
 /// \note The implementation relies on \c rosa::csv::CSVRowParser, which is
 /// implemented only for `arithmetic` types -- signed and unsigned integral and
 /// floating-point types -- and for \c std::string. Those are the valid values
 /// for \p T.
 template <typename T>
 class CSVRow {
 public:
   /// Gives a constant reference for an entry at a given position of the row.
   ///
   /// \note No bounds checking is performed.
   ///
   /// \param Index the position of the entry
   ///
   /// \return constant reference for the stored entry at position \p Index
   const T &operator[](const size_t Index) const noexcept { return Data[Index]; }
 
   /// Tells the number of entries stored in the row.
   ///
   /// \return number of stored entries.
   size_t size(void) const noexcept { return Data.size(); }
 
   /// Parses and stores one row of CSV data.
   ///
   /// The function reads one line from \p Str and parses it into
   /// \c rosa::csv::CSVRow::Data using \c rosa::csv::CSVRowParser.
   ///
   /// \param [in,out] Str input stream of a CSV file
   void readNextRow(std::istream &Str) {
     std::string Line;
     std::getline(Str, Line);
     std::stringstream LineStream(Line);
 
     CSVRowParser<T>::parse(LineStream, Data, Delimeter);
   }
 
   bool isNumeric(const std::string& input){
       return std::all_of(input.begin(), input.end(), ::isdigit);
   }
 
   void checkIfHeader(std::istream &Str){
       std::string Line;
       std::getline(Str, Line);
       std::vector<std::string> FirstRowValues;
       std::stringstream LineStream(Line);
       std::string Value;
       bool HasHeaderLocal = true;
 
       CSVRowParser<std::string>::parse(LineStream, FirstRowValues, Delimeter);
       for(std::vector<std::string>::iterator it = FirstRowValues.begin();
           it != FirstRowValues.end(); ++it){
           Value =  *it;
           if(isNumeric(Value)){
               HasHeaderLocal = false;
           }
       }
       if(HasHeaderLocal){
           Header.swap(FirstRowValues);
           /* // only for debugging purpose.
           for(std::vector<std::string>::iterator it = Header.begin();
               it != Header.end(); ++it){
               std::cout << *it << ", ";
           }
           std::cout << std::endl; */
       }else {
           std::stringstream LineStream2(Line);
           CSVRowParser<T>::parse(LineStream2, Data, Delimeter);
       }
       HasHeader  = HasHeaderLocal;
       isFirstRow = false;
   }
 
   bool isHavingHeader(){
        return HasHeader;
   }
 
   inline void setDelimeter(char Delimeter){
       this->Delimeter = Delimeter;
   }
 
   inline char getDelimeter(){
      return this->Delimeter;
   }
 
   inline void setEndOfLine(char EndOfLine){
       this->EndOfLine = EndOfLine;
   }
 
   inline char getEndOfLine(){
       return this->EndOfLine;
   }
 
   inline bool isThisFirstRow(){
       return this->isFirstRow;
   }
 
   inline void setColumn(const size_t & Column){
       this->Column = Column;
   }
 
 private:
   std::vector<T>           Data;                              ///< Stores parsed entries
   uint64_t                 RowNumber            = 0;          ///< Current row number
   bool                     isFirstRow           = true;       ///< Is this the first row
   bool                     isFirstRowRead       = false;      ///< Is the first row read already
   bool                     HasHeader            = false;      ///< Has the current csv file a header
   std::vector<std::string> Header;                            ///< Stores the header entries if available
   char                     Delimeter            = ',';        ///< Stores the delimeter between data entries
   char                     EndOfLine            = '\n';       ///< Stores the end of line character
   size_t                   Column               = 1;          ///< Stores the column to get the data out of the row
 };
 
 /// Parses and stores entries from a row of CSV data.
 /// It parses an entire row and takes only the value of the corresponding column.
 ///
 /// \tparam T type of values to parse and store, i.e. entries in the row
 ///
 /// \note The implementation relies on \c rosa::csv::CSVRowParser, which is
 /// implemented only for `arithmetic` types -- signed and unsigned integral and
 /// floating-point types -- and for \c std::string. Those are the valid values
 /// for \p T.
 template <typename T>
 class CSVValue {
 public:
   /// Gives a constant reference for an entry at a given position of the row.
   ///
   /// \note No bounds checking is performed.
   ///
   /// \param Index the position of the entry
   ///
   /// \return constant reference for the stored entry at position \p Index
   const T &operator[](const size_t Index) const noexcept { return Data[Index]; }
 
   /// Tells the number of entries stored in the row.
   ///
   /// \return number of stored entries.
   size_t size(void) const noexcept { return Data.size(); }
 
   /// Parses and stores one row of CSV data.
   ///
   /// The function reads one line from \p Str and parses it into
   /// \c rosa::csv::CSVRow::Data using \c rosa::csv::CSVRowParser.
   ///
   /// \param [in,out] Str input stream of a CSV file
   void readNextValue(std::istream &Str) {
     std::string Line;
     std::getline(Str, Line);
     std::stringstream LineStream(Line);
 
     CSVRowParser<T>::parseValue(LineStream, Data, Column, Delimeter);
   }
 
   bool isNumeric(const std::string& input){
       return std::all_of(input.begin(), input.end(), ::isdigit);
   }
 
   void checkIfHeader(std::istream &Str){
       std::string Line;
       std::getline(Str, Line);
       std::vector<std::string> FirstRowValues;
       std::stringstream LineStream(Line);
       std::string Value;
       bool HasHeaderLocal = true;
 
       CSVRowParser<std::string>::parse(LineStream, FirstRowValues, Delimeter);
       for(std::vector<std::string>::iterator it = FirstRowValues.begin();
           it != FirstRowValues.end(); ++it){
           Value =  *it;
           if(isNumeric(Value)){
               HasHeaderLocal = false;
           }
       }
       if(HasHeaderLocal){
           Header.swap(FirstRowValues);
           /* // only for debugging purpose.
           for(std::vector<std::string>::iterator it = Header.begin();
               it != Header.end(); ++it){
               std::cout << *it << ", ";
           }
           std::cout << std::endl; */
       }else {
           std::stringstream LineStream2(Line);
           CSVRowParser<T>::parseValue(LineStream2, Data, Delimeter, Column);
       }
       HasHeader  = HasHeaderLocal;
       isFirstRow = false;
   }
 
   bool isHavingHeader(){
        return HasHeader;
   }
 
   inline void setDelimeter(char Delimeter){
       this->Delimeter = Delimeter;
   }
 
   inline char getDelimeter(){
      return this->Delimeter;
   }
 
   inline void setEndOfLine(char EndOfLine){
       this->EndOfLine = EndOfLine;
   }
 
   inline char getEndOfLine(){
       return this->EndOfLine;
   }
 
   inline bool isThisFirstRow(){
       return this->isFirstRow;
   }
 
   inline void setColumn(const size_t & Column){
       this->Column = Column;
   }
 
 private:
   std::vector<T>           Data;                              ///< Stores parsed entries
   uint64_t                 RowNumber            = 0;          ///< Current row number
   bool                     isFirstRow           = true;       ///< Is this the first row
   bool                     isFirstRowRead       = false;      ///< Is the first row read already
   bool                     HasHeader            = false;      ///< Has the current csv file a header
   std::vector<std::string> Header;                            ///< Stores the header entries if available
   char                     Delimeter            = ',';        ///< Stores the delimeter between data entries
   char                     EndOfLine            = '\n';       ///< Stores the end of line character
   size_t                   Column               = 1;          ///< Stores the column to get the data out of the row
 };
 
 
 /// Reads a row of CSV data into \c rosa::csv::CSVRow.
 ///
 /// The next line is read from \p Str by calling
 /// \c rosa::csv::CSVRow::readNextRow on \p Data.
 ///
 /// \note A CSV file should contain no empty lines.
 ///
 /// \param [in,out] Str input stream of a CSV file
 /// \param [in,out] Data object to read the next line into
 ///
 /// \return \p Str after reading one line from it
 template <typename T>
 std::istream &operator>>(std::istream &Str, CSVRow<T> &Data) {
     if (Data.isThisFirstRow()){
         Data.checkIfHeader(Str);
         if(Data.isHavingHeader()){
             Data.readNextRow(Str);
         }
     }else {
         Data.readNextRow(Str);
     }
     /* // just for debugging purpose
   char c;
   while(Str.get(c)){
       std::cout << c;
   }
   std::cout << std::endl;
   */
   return Str;
 }
 
 /// Reads a value of CSV data into \c rosa::csv::CSVValue.
 ///
 /// The next line is read from \p Str by calling
 /// \c rosa::csv::CSVValue::readNextValue on \p Data.
 ///
 /// \note A CSV file should contain no empty lines.
 ///
 /// \param [in,out] Str input stream of a CSV file
 /// \param [in,out] Data object to read the next line into
 ///
 /// \return \p Str after reading one line from it
 template <typename T>
 std::istream &operator>>(std::istream &Str, CSVValue<T> &Data) {
     if (Data.isThisFirstRow()){
         Data.checkIfHeader(Str);
         if(Data.isHavingHeader()){
             Data.readNextValue(Str);
         }
     }else {
         Data.readNextValue(Str);
     }
     /* // just for debugging purpose
   char c;
   while(Str.get(c)){
       std::cout << c;
   }
   std::cout << std::endl;
   */
   return Str;
 }
 
 } // End namespace
 
 /// Provides `InputIterator` features for iterating over a CSV file in a
 /// flat way.
 ///
 /// The iterator hides rows of the CSV file, and iterates over the entries
 /// row-by-row.
 ///
 /// \note A CSV file should contain no empty lines.
 ///
 /// \tparam T type of values to iterate over, i.e. entries in the CSV file.
 ///
 /// \note The implementation relies on \c rosa::csv::CSVRow, which in turn
 /// relies on \c rosa::csv::CSVRowParser, which is implemented only for
 /// `arithmetic` types -- signed and unsigned integral types and floating-point
 /// types -- and for \c std::string. Those are the valid values for \p T.
 template <typename T>
 class CSVFlatIterator {
 public:
   /// \defgroup CSVFlatIteratorTypedefs Typedefs of rosa::csv::CSVFlatIterator
   ///
   /// Standard `typedef`s for iterators.
   ///
   ///@{
   typedef std::input_iterator_tag
       iterator_category;               ///< Category of the iterator.
   typedef T value_type;                ///< Type of values iterated over.
   typedef std::size_t difference_type; ///< Type to identify distance.
   typedef T *pointer;                  ///< Pointer to the type iterated over.
   typedef T &reference;                ///< Reference to the type iterated over.
   ///@}
 
   /// Creates a new instance.
   ///
   /// \param [in,out] S input stream to iterate over
   CSVFlatIterator(std::istream &S, size_t Column = 1,  bool DataRow = true,
                   const char Delimeter = ',', const char EndOfLine = '\n')
       : Str(S.good() ? &S : nullptr),
         Pos((size_t)(-1)),
         Delimeter(Delimeter), EndOfLine(EndOfLine),
         Column(Column), DataRow(DataRow){
       Row.setDelimeter(Delimeter);
       Row.setEndOfLine(EndOfLine);
       Row.setColumn(Column);
 
       Value.setDelimeter(Delimeter);
       Value.setEndOfLine(EndOfLine);
       Value.setColumn(Column);
     // \c rosa::csv::CSVFlatIterator::Pos is initialized to `-1` so the first
     // incrementation here will set it properly.
     ++(*this);
   }
 
-  /// Creates a new instance.
-  ///
-  /// \param [in,out] S input stream to iterate over
-  CSVFlatIterator(std::istream &S, size_t Column = 1)
-      : Str(S.good() ? &S : nullptr),
-        Pos((size_t)(-1)),
-        Delimeter(','), EndOfLine('\n'),
-        Column(Column), DataRow(true){
-      Row.setDelimeter(Delimeter);
-      Row.setEndOfLine(EndOfLine);
-      Row.setColumn(Column);
-
-      Value.setDelimeter(Delimeter);
-      Value.setEndOfLine(EndOfLine);
-      Value.setColumn(Column);
-    // \c rosa::csv::CSVFlatIterator::Pos is initialized to `-1` so the first
-    // incrementation here will set it properly.
-    ++(*this);
-  }
-
   /// Creates an empty new instance.
   CSVFlatIterator(void) noexcept : Str(nullptr), DataRow(true) {}
 
   /// Pre-increment operator.
   ///
   /// The implementation moves over the entries in the current row and advances
   /// to the next row when the end of the current row is reached. If the end of
   /// the input stream is reached, the operator becomes empty and has no
   /// further effect.
   ///
   /// \return \p this object after incrementing it.
   CSVFlatIterator &operator++() {
     if (Str) {
       ++Pos;
         if(DataRow){
             if (Pos == Row.size()) {
               if (!((*Str) >> Row)) {
                 Str = nullptr;
                 --Pos; // Stay on the last entry forever.
               } else {
                 Pos = 0;
               }
             }
         }else{
             if (Pos == Value.size()) {
               if (!((*Str) >> Value)) {
                 Str = nullptr;
                 --Pos; // Stay on the last entry forever.
               } else {
                 Pos = 0;
               }
             }
         }
 
     }
     return *this;
   }
 
   /// Post-increment operator.
   ///
   /// The implementation uses the pre-increment operator and returns a copy of
   /// the original state of \p this object.
   ///
   /// \return \p this object before incrementing it.
   CSVFlatIterator operator++(int) {
     CSVFlatIterator Tmp(*this);
     ++(*this);
     return Tmp;
   }
 
   /// Returns a constant reference to the current entry.
   ///
   /// \note Should not dereference the iterator when it is empty.
   ///
   /// \return constanStartt reference to the current entry.
   const T &operator*(void)const noexcept {
       if(DataRow){
           return Row[Pos];
       }else {
           return Value[Pos];
       }
   }
 
   /// Returns a constant pointer to the current entry.
   ///
   /// \note Should not dereference the iterator when it is empty.
   ///
   /// \return constant pointer to the current entry.
   const T *operator->(void)const noexcept {
       if(DataRow){
           return &Row[Pos];
       }else {
           return &Value[Pos];
       }
   }
 
   /// Tells if \p this object is equal to another one.
   ///
   /// Two \c rosa::csv::CSVReader instances are equal if and only if they are
   /// the same or both are empty.
   ///
   /// \param RHS other object to compare to
   ///
   /// \return whether \p this object is equal with \p RHS
   bool operator==(const CSVFlatIterator &RHS) const noexcept {
     return ((this == &RHS) || ((this->Str == nullptr) && (RHS.Str == nullptr)));
   }
 
   /// Tells if \p this object is not equal to another one.
   ///
   /// \see rosa::csv::CSVReader::operator==
   ///
   /// \param RHS other object to compare to
   ///
   /// \return whether \p this object is not equal with \p RHS.
   bool operator!=(const CSVFlatIterator &RHS) const noexcept {
     return !((*this) == RHS);
   }
 
   inline void setDelimeter(char Delimter){
       this->Delimeter = Delimter;
   }
 
   inline char getDelimeter(){
       return  this->Delimeter;
   }
 
 private:
   std::istream *Str;     ///< Input stream of a CSV file to iterate over.
   CSVRow<T> Row;         ///< Content of the current row iterating over.
   CSVValue<T> Value;     ///< Content of the specified column in the current row.
   size_t Pos;            ///< Current position within the current row.
   char Delimeter;        ///< Delimeter between the entries
   char EndOfLine;        ///< stores the end of line character
   size_t Column;         ///< Index of the column to get data out of it.
   bool DataRow;          ///< Indicates if you want to read a row or only one column out of a row. true = use CSVRow
 };
 
 } // End namespace csv
 } // End namespace rosa
 
 #endif // ROSA_SUPPORT_CSV_CSVREADER_HPP