What are some best practices for using variadic templates in C++?

What are some best practices for using variadic templates in C++?

When using variadic templates in C++, it's important to ensure type safety and maintain readability. You should also prefer using parameter packs over fixed-size arrays.

Can you give an example of a variadic template function?

Sure! Here's a simple example:

template<typename... Args>
void print(Args... args) {
    (std::cout << ... << args) << '\n';
}

This function can take any number of arguments and print them.

What are the common pitfalls to avoid?

Common pitfalls include excessive complexity in template metaprogramming, not handling edge cases, and failing to provide clear error messages for template instantiation failures.

How do variadic templates compare to traditional function overloading?

Variadic templates provide more flexibility and can handle a variable number of arguments without needing multiple overloads, which can lead to cleaner and more maintainable code.