just made it

FlippR-Driver/src/output/items/Display.h

@@ -26,17 +26,16 @@ public:
   Display(int address, int id);
   virtual ~Display() = default;
 
-  virtual int getID();
-
   virtual void write_score(int score);
   virtual void write_content(std::array<char, DigitCount> content);
 
+  virtual std::vector<char> get_content();
+
 public:
   std::array<char, DigitCount> content;
 
 private:
   int address;
-  int id;
 
   std::string fit_string(std::string &score_string);
 };

FlippR-Driver/src/output/items/Display.hpp

@@ -61,6 +61,12 @@ void Display<DigitCount>::write_content( std::array<char, DigitCount> content)
   this->content = content;
 }
 
+<int DigitCount>
+std::vector<char> Display<DigitCount>::get_content()
+{
+  return std::vector<char>(content, content + DigitCount);
+}
+
 }
 }
 }

FlippR-Driver/src/output/items/IDisplay.h

@@ -8,7 +8,7 @@
 #ifndef _SRC_OUTPUT_IDISPLAY_H_
 #define _SRC_OUTPUT_IDISPLAY_H_
 
-#include <array>
+#include <vector>
 
 namespace flippR_driver
 {
@@ -24,7 +24,7 @@ public:
 	IDisplay();
 	virtual ~IDisplay();
 
-	virtual int getID() = 0;
+	virtual std::vector<char> get_content() = 0;
 };
 
 }