模板类型名称参数

时间:2018-12-07 20:41:30

标签: c++

template<typename T>
struct X : B<T> // "B<T>" is dependent on T
{
    typename T::A* pa; // "T::A" is dependent on T
                       // (see below for the meaning of this use of "typename")
    void f(B<T>* pb) {
        static int i = B<T>::i; // "B<T>::i" is dependent on T
        pb->j++; // "pb->j" is dependent on T
    }
};

内部类型名T的目的是什么?

0 个答案:

没有答案