What are some common mistakes when using variadic templates in C++?

What are some common mistakes when using variadic templates in C++?

Some common mistakes include forgetting to use the correct parameter pack expansion syntax and not handling empty parameter packs.

Can you explain the correct syntax for parameter pack expansion?

Sure! You can expand a parameter pack using '...' before the pack name, like this: 'func(args...)'.

What happens if I forget to handle an empty parameter pack?

If you don't handle it, it can lead to compilation errors or unexpected behavior, as the function may not be called.

Are there any best practices to follow when using variadic templates?

Yes, always ensure you provide default values, use static assertions for type checks, and document your template parameters.