What are some use cases for C++ variadic templates?

What are some use cases for C++ variadic templates?

C++ variadic templates allow functions and classes to accept an arbitrary number of template parameters. They are useful in scenarios like creating type-safe functions, implementing generic data structures, and enhancing code reusability.

Can you give me an example of a function using variadic templates?

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 advantages of using variadic templates over traditional methods?

Variadic templates provide better type safety, reduce code duplication, and allow for more flexible and generic programming compared to traditional methods like using std::initializer_list or function overloading.

Are there any limitations to using variadic templates?

Yes, some limitations include increased complexity in code readability and potential compilation errors that can be harder to debug. Also, they may lead to longer compile times.