class MyClass
{
public:
...
private:
enum class BDTNodeType : unsigned char
{
NT_TERMINAL_ZERO,
NT_TERMINAL_ONE,
NT_TERMINAL_X,
NT_NOT_TERMINAL
};
class BDTNode
{
public:
explicit BDTNode(BDTNodeType node_type = BDTNodeType::NT_NOT_TERMINAL);
BDTNode(const BDTNode &node);
~BDTNode();
BDTNodeType type;
BDTNode *thenPtr; //1
BDTNode *elsePtr; //0
};
BDTNode *root_node;
//Constant nodes
static const BDTNode fv_nodes[3] = {
BDTNode(BDTNodeType::NT_TERMINAL_ZERO),
BDTNode(BDTNodeType::NT_TERMINAL_ONE),
BDTNode(BDTNodeType::NT_TERMINAL_X)
};
};
我想直接在类声明中初始化静态常量BDTNode fv_nodes数组,因为C++ 11允许这样做。但是我得到了“C2864:'MyClass :: fv_nodes':一个带有类内初始值设定项的静态数据成员必须具有非易失性const积分”。而且我不能在课堂外初始化它,因为在这种情况下,“BDTNode”类将无法访问。那么我应该怎么做?初始化私有成员静态常量数组