??C++????????????????????????????

???????????? ???????[ 2013/4/24 10:02:45 ] ????????

????????4??

template<typename T?? unsigned B>
struct Base
{
    //other function
    //....
    template<unsigned S>
    struct FuncObj
    {
        void operator()()
        {
            cout<<"primary function"<<endl;
        }
    };
    template<>
    struct FuncObj<16>
    {
        void operator()()
        {
            cout<<"specialization function"<<endl;
        }
    };
    FuncObj<B> Func;
};

???????????????????????????????????????????????????

????????5??

template<typename T?? unsigned B>
struct Base
{
    //other function
    //....
    template<unsigned N>
    void FuncImpl()
    {
        cout<<"primary function"<<endl;
    }
    template<>
    void FuncImpl<16>()
    {
        cout<<"specialization function"<<endl;
    }
    void Func()
    {
        FuncImpl<B>();
    }
};

???????????????????庯???????????

????????6??

template<typename T?? unsigned B>
struct Base
{
    //other function
    //....
    template<unsigned N>
    class Int2Type
    {
        enum { value = N };
    };
    template<unsigned V>
    void FuncImpl(const Int2Type<V>)
    {
        cout<<"primary function"<<endl;
    }
    void FuncImpl(const Int2Type<16>)
    {
        cout<<"specialization function"<<endl;
    }
    void Func()
    {
        FuncImpl(Int2Type<B>());
    }
};