Modern C++ Programming Cookbook

How to do it...

In order to write variadic function templates, you must perform the following steps:

1. Define an overload with a fixed number of arguments to end compile-time recursion if the semantics of the variadic function template require it (refer to [1] in the following code).
2. Define a template parameter pack to introduce a template parameter that can hold any number of arguments, including zero; these arguments can be either types, non-types, or templates (refer to [2]).
3. Define a function parameter pack to hold any number of function arguments, including zero; the size of the template parameter pack and the corresponding function parameter pack is the same and can be determined with the sizeof... operator (refer to [3]).
4. Expand the ...