What are some C++ template examples?

Can you provide some examples of C++ templates?

Sure! C++ templates allow you to write generic and reusable code. Here are a few examples:

1. Function Template: A template for a function that can work with any data type.
2. Class Template: A template for a class that can handle different data types.
3. Template Specialization: Customizing a template for a specific data type.

Can you show me a simple function template?

Absolutely! Here's a simple function template that swaps two values:

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

What about a class template?

Here's a basic example of a class template for a pair of values:

template <typename T1, typename T2>
class Pair {
public:
    T1 first;
    T2 second;
    Pair(T1 f, T2 s) : first(f), second(s) {}
};

How do I specialize a template?

Template specialization allows you to define a specific implementation for a particular data type. For example:

template <>
class Pair<int, double> {
public:
    int first;
    double second;
    Pair(int f, double s) : first(f), second(s) {}
};