The interface is exposition only, as C++ does not allow to declare parameter `f1` and `f2` after a variadic parameter pack.
The interface is exposition only, as C++ does not allow to declare parameter该接口仅为说明性用法,因为 C++ 不允许在可变参数包之后声明 `f1` and和 `f2` after a variadic parameter pack.参数。
The interface is exposition only, as C++ does not allow to declare parameter该接口仅为说明性用法,因为 C++ 不允许在可变参数包之后声明 `f1`and和 `f2`after a variadic parameter pack.参数。