常量数组类成员初始化

Question

可能重复：
initialize a const array in a class initializer in C++

这是一个新手的问​​题。如何初始化常量整数数组的类成员？我认为在相同情况下，经典数组并不是最佳选择，我应该使用什么来代替它？

class GameInstance{ 
    enum Signs{ 
     NUM_SIGNS = 3; 
    }; 
    const int gameRulesTable[NUM_SIGNS][NUM_SIGNS]; // how to init it? 
public: 
    explicit GameInstance():gameRulesTable(){}; 
}; 

Answer 1

使它静态？

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}}; 

Answer 2

在C++ 11，则可以在一个初始化列表初始化const的阵列成员

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

或

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

有用链接：http://www.informit.com/articles/article.aspx?p=1852519

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