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

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

When using variadic templates in C++, it's important to ensure type safety, avoid excessive recursion, and use perfect forwarding.

Can you explain perfect forwarding in this context?

Perfect forwarding allows you to forward arguments to another function while preserving their value category, which is crucial for efficiency.

What are some common pitfalls to avoid?

Common pitfalls include not handling empty parameter packs correctly and overusing variadic templates, which can lead to complex code.

Are there any performance considerations?

Yes, variadic templates can introduce overhead if not used carefully, especially with large parameter packs or deep recursion.