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