Копирование map через перегрузку оператора

class TrainStation
{
private:
 map <AnsiString, unsigned int> info;
 AnsiString name;
public:
 TrainStation(){info["0"]=0;}
 TrainStation(AnsiString i, unsigned int n){info[i]=n;}
 TrainStation(const TrainStation& TStation);
 
 const TrainStation& operator=(const TrainStation& TStation);
 
 int GetSize(){return info.size();}
 void SetInfo(AnsiString s, unsigned int i);
 void SetName(AnsiString s){name = s;}
 AnsiString GetName(){return name;}
 void Delete(AnsiString s) {info.erase(s);}
 void Clear(){info.clear();}
 AnsiString Show(AnsiString s);
 int Find(AnsiString s){return info.count(s);}
 void Change(AnsiString s, unsigned int i);
 AnsiString Read();
};

TrainStation::TrainStation(const TrainStation& TStation) // Конструктор копий
{
 info = TStation.info;
}
 
const TrainStation& TrainStation::operator=(const TrainStation& TStation) // Перегрузка оператора
{
 if (this == &TStation) return *this;
 if (info.size()!=0)
 {
  info.clear();
  info = TStation.info;
  return *this;
 }
}

const TrainStation& TrainStation::operator=(const TrainStation& TStation) // Перегрузка оператора
{
 info = TStation.info;
 return *this;
}