Introduction to Class templates

In addition to function templates, there are also class templates. They share many of the same concepts, so what you have already learned applies for this as well. Look at the simple example of class template:

main.cpp


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#include <iostream>

// Creating a template using `template` keyword
template <typename T>
class Box {
private:
    T value; // Stores the value of type `T`
public:
    Box(T value) : value(value) {} // Constructor initializes the `value`
};

int main()
{
    Box<int> intBox(123); // Creating a Box object for an integer type
}

Note

Try to pass different types to the class.

Class templates are often used as containers for data because they allow you to choose any type for storage. This flexibility enables the creation of generic data structures.

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Kursusindhold

C++ Templates

1. Creating First Template

Introduction to C++ Templates Basic Syntax of Templates in C++Creating Your First Template in C++Working with Multiple Typenames in Templates Naming Conventions

2. Templates Usage

Typename Parameter as a Return Type Implicit and Explicit Type Specification Non-type Template Parameters

3. Class Templates

Introduction to Class templates Template Classes and STL Templates with Default Type Parameters Class Template Argument Deduction

4. Template Specialization

Introduction to Template Specialization How to Use Template Specialization Partial Template Specialization Template Constraints Overview