How do I create a template class in C++?

How do I create a template class in C++?

To create a template class in C++, you use the template keyword followed by template parameters. Here's a simple example:

template <typename T>
class MyClass {
public:
    T value;
    MyClass(T val) : value(val) {}
    T getValue() { return value; }
};

This defines a template class MyClass that can hold any data type.

Can you explain how to use this template class?

Sure! You can create an instance of MyClass with any data type. For example:

MyClass<int> intObj(5);
MyClass<std::string> strObj("Hello");

Here, intObj is an instance for integers, and strObj is for strings.

What if I want to add more functions to the template class?

You can add more member functions just like in a regular class. For example:

template <typename T>
class MyClass {
public:
    T value;
    MyClass(T val) : value(val) {}
    T getValue() { return value; }
    void setValue(T val) { value = val; }
};

Now, MyClass has a setValue function to modify the value.

Are there any limitations to using template classes?

Yes, template classes can lead to code bloat if used excessively, as each instantiation generates new code. Also, debugging can be more complex due to the generic nature of templates.