Contenido del Curso

C++ Templates

1. Creating First Template

Introduction to Templates Basic Syntax of Template Creating Your First Template Multiple Typenames 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

Creating Your First Template

Let's see what is happening when we specify different types for the template. For this we will use typeid().name(), it simply shows the data type of the variable. Look at the example below:

main


              1234567
            
#include <iostream>

int main()
{
    int x = 5;
    std::cout << typeid(x).name();    
}

Note

The code snippet above will just display in console i, symbolizing that x is an int.

Let's create a template using <typename Type> and pass Type as a parameter to the function instead of specifying a specific variable.

main


              12345678910111213
            
#include <iostream>

template<typename Type>
void check_type() 
{ 
    std::cout << typeid(Type).name() << std::endl;
}

int main()
{
    // Try to change `int` to different type
    check_type<int>();
}

As you can see, when you call the template function and specify a type within the brackets, the typename parameter receives that type. The name of the template parameter essentially becomes an alias for that type.

Tarea

Swipe to show code editor

Turn the swap function into a template function:
1. define template using the template keyword;
2. add the list of template parameters;
3. add one parameter for the template.
Change all types (int) to the typename from the template parameter.
Call the template function and pass char as the type, swapping two variables in the main function.

_{Once you've completed this task, click the button below the code to check your solution.}

Cambia al escritorio para practicar en el mundo realContinúe desde donde se encuentra utilizando una de las siguientes opciones

¿Todo estuvo claro?

¡Gracias por tus comentarios!

Sección 1. Capítulo 3

Creating Your First Template

Let's see what is happening when we specify different types for the template. For this we will use typeid().name(), it simply shows the data type of the variable. Look at the example below:

main


              1234567
            
#include <iostream>

int main()
{
    int x = 5;
    std::cout << typeid(x).name();    
}

Note

The code snippet above will just display in console i, symbolizing that x is an int.

Let's create a template using <typename Type> and pass Type as a parameter to the function instead of specifying a specific variable.

main


              12345678910111213
            
#include <iostream>

template<typename Type>
void check_type() 
{ 
    std::cout << typeid(Type).name() << std::endl;
}

int main()
{
    // Try to change `int` to different type
    check_type<int>();
}

Tarea

Swipe to show code editor

Turn the swap function into a template function:
1. define template using the template keyword;
2. add the list of template parameters;
3. add one parameter for the template.
Change all types (int) to the typename from the template parameter.
Call the template function and pass char as the type, swapping two variables in the main function.

_{Once you've completed this task, click the button below the code to check your solution.}

Cambia al escritorio para practicar en el mundo realContinúe desde donde se encuentra utilizando una de las siguientes opciones

¿Todo estuvo claro?

¡Gracias por tus comentarios!

Sección 1. Capítulo 3

Creating Your First Template

Let's see what is happening when we specify different types for the template. For this we will use typeid().name(), it simply shows the data type of the variable. Look at the example below:

main


              1234567
            
#include <iostream>

int main()
{
    int x = 5;
    std::cout << typeid(x).name();    
}

Note

The code snippet above will just display in console i, symbolizing that x is an int.

Let's create a template using <typename Type> and pass Type as a parameter to the function instead of specifying a specific variable.

main


              12345678910111213
            
#include <iostream>

template<typename Type>
void check_type() 
{ 
    std::cout << typeid(Type).name() << std::endl;
}

int main()
{
    // Try to change `int` to different type
    check_type<int>();
}

Tarea

Swipe to show code editor

Turn the swap function into a template function:
1. define template using the template keyword;
2. add the list of template parameters;
3. add one parameter for the template.
Change all types (int) to the typename from the template parameter.
Call the template function and pass char as the type, swapping two variables in the main function.

_{Once you've completed this task, click the button below the code to check your solution.}

Cambia al escritorio para practicar en el mundo realContinúe desde donde se encuentra utilizando una de las siguientes opciones

¿Todo estuvo claro?

¡Gracias por tus comentarios!

Let's see what is happening when we specify different types for the template. For this we will use typeid().name(), it simply shows the data type of the variable. Look at the example below:

main


              1234567
            
#include <iostream>

int main()
{
    int x = 5;
    std::cout << typeid(x).name();    
}

Note

The code snippet above will just display in console i, symbolizing that x is an int.

Let's create a template using <typename Type> and pass Type as a parameter to the function instead of specifying a specific variable.

main


              12345678910111213
            
#include <iostream>

template<typename Type>
void check_type() 
{ 
    std::cout << typeid(Type).name() << std::endl;
}

int main()
{
    // Try to change `int` to different type
    check_type<int>();
}

Tarea

Swipe to show code editor

Turn the swap function into a template function:
1. define template using the template keyword;
2. add the list of template parameters;
3. add one parameter for the template.
Change all types (int) to the typename from the template parameter.
Call the template function and pass char as the type, swapping two variables in the main function.

_{Once you've completed this task, click the button below the code to check your solution.}

Cambia al escritorio para practicar en el mundo realContinúe desde donde se encuentra utilizando una de las siguientes opciones

Sección 1. Capítulo 3

Cambia al escritorio para practicar en el mundo realContinúe desde donde se encuentra utilizando una de las siguientes opciones