const array class member initialization

In C++11, you could initialize const array member in an initialization list

class Widget {
public:
  Widget(): data {1, 2, 3, 4, 5} {}
private:
  const int data[5];
};

or

class Widget {
    public:
      Widget(): data ({1, 2, 3, 4, 5}) {}
    private:
      const int data[5];
    };

useful link: http://www.informit.com/articles/article.aspx?p=1852519

http://allanmcrae.com/2012/06/c11-part-5-initialization/

Make it static?

class GameInstance{
    enum Signs{
        NUM_SIGNS = 3};
    static const int gameRulesTable[2][2];
public:
    explicit GameInstance(){};
};

...in your cpp file you would add:
const int GameInstance::gameRulesTable[2][2] = {{1,2},{3,4}};