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Source code

class MyClass {
   private:
      QString* data1;
      QString* data2;

      // Return a number depending on the value of param
      QString* privateData(const int param);

   public:
      // Return a string reflecting the internal data
      const QString readData(const int param) const;

      // Append to the internal data
      void appendData(const int param, QString* value);

      // Add ctors/dtors, etc
};

QString* MyClass::privateData(const int param) {
   if (param == 1)
      return data1;
   else
      return data2;
}

const QString* MyClass::readData(const int param) const {
   const QString* data = privateData(param);
   return data;
}

void MyClass::appendData(const int param, QString* value) {
   QString* data = privateData(param);
   data->append(&value);
}