What are the differences between variadic templates and function overloading in C++?

What are the differences between variadic templates and function overloading in C++?

Variadic templates allow functions to accept an arbitrary number of arguments, while function overloading lets you define multiple functions with the same name but different parameter types or counts.

Can you give me an example of each?

Sure! For variadic templates, you might have a function like template<typename... Args> void print(Args... args) { ... }. For overloading, you could have void print(int a) { ... } and void print(double b) { ... }.

Which one is more efficient?

It depends on the context. Variadic templates can be more flexible and may lead to less code duplication, while overloading can be simpler for a small number of fixed types.

Are there any limitations to using variadic templates?

Yes, variadic templates can be more complex to implement and understand, especially for beginners. They also require careful handling of types.