What are templates in C++?

What are templates in C++?

Templates in C++ are a powerful feature that allows you to write generic and reusable code. They enable functions and classes to operate with any data type.

Can you give me an example of a template function?

Sure! Here's a simple example of a template function that swaps two values:

template <typename T>
void swap(T &a, T &b) {
    T temp = a;
    a = b;
    b = temp;
}

What are the advantages of using templates?

The main advantages of using templates are code reusability, type safety, and the ability to create functions and classes that work with any data type without code duplication.

Are there any downsides to using templates?

Yes, some downsides include increased compilation times and potential code bloat, as templates can lead to multiple instantiations of the same function or class for different types.