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Typename Parameter as a Return Type | Templates Usage
C++ Templates
course content

Conteúdo do Curso

C++ Templates

C++ Templates

1. Creating First Template
2. Templates Usage
3. Class Templates
4. Template Specialization

bookTypename Parameter as a Return Type

Templates are not just for defining the types of parameters. A powerful feature of templates is that the return type of a function can also depend on the template parameter. This gives you the flexibility to create generic functions with return types that adjust based on the template type provided.

cpp

main

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#include <iostream> template<typename T> T MyFirstTemplateReturn() { // Returning a default-initialized value of type T return T{}; } int main() { // Call the template with the void type std::cout << typeid(MyFirstTemplateReturn<void>()).name() << std::endl; }

In the example above, the function's return type is defined by the template parameter T. When we specify void as the type, the compiler interprets it accordingly.

Tarefa

Create a simple template that returns the passed value

  1. Write a simple template function called GetValue.
  2. Use the template's typename parameter as the return type.
  3. Add a parameter to the template function with the same type as the return type.
  4. Return the function's parameter.

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Seção 2. Capítulo 1
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bookTypename Parameter as a Return Type

Templates are not just for defining the types of parameters. A powerful feature of templates is that the return type of a function can also depend on the template parameter. This gives you the flexibility to create generic functions with return types that adjust based on the template type provided.

cpp

main

copy
1234567891011121314
#include <iostream> template<typename T> T MyFirstTemplateReturn() { // Returning a default-initialized value of type T return T{}; } int main() { // Call the template with the void type std::cout << typeid(MyFirstTemplateReturn<void>()).name() << std::endl; }

In the example above, the function's return type is defined by the template parameter T. When we specify void as the type, the compiler interprets it accordingly.

Tarefa

Create a simple template that returns the passed value

  1. Write a simple template function called GetValue.
  2. Use the template's typename parameter as the return type.
  3. Add a parameter to the template function with the same type as the return type.
  4. Return the function's parameter.

Switch to desktopMude para o desktop para praticar no mundo realContinue de onde você está usando uma das opções abaixo
Tudo estava claro?

Como podemos melhorá-lo?

Obrigado pelo seu feedback!

Seção 2. Capítulo 1
toggle bottom row

bookTypename Parameter as a Return Type

Templates are not just for defining the types of parameters. A powerful feature of templates is that the return type of a function can also depend on the template parameter. This gives you the flexibility to create generic functions with return types that adjust based on the template type provided.

cpp

main

copy
1234567891011121314
#include <iostream> template<typename T> T MyFirstTemplateReturn() { // Returning a default-initialized value of type T return T{}; } int main() { // Call the template with the void type std::cout << typeid(MyFirstTemplateReturn<void>()).name() << std::endl; }

In the example above, the function's return type is defined by the template parameter T. When we specify void as the type, the compiler interprets it accordingly.

Tarefa

Create a simple template that returns the passed value

  1. Write a simple template function called GetValue.
  2. Use the template's typename parameter as the return type.
  3. Add a parameter to the template function with the same type as the return type.
  4. Return the function's parameter.

Switch to desktopMude para o desktop para praticar no mundo realContinue de onde você está usando uma das opções abaixo
Tudo estava claro?

Como podemos melhorá-lo?

Obrigado pelo seu feedback!

Templates are not just for defining the types of parameters. A powerful feature of templates is that the return type of a function can also depend on the template parameter. This gives you the flexibility to create generic functions with return types that adjust based on the template type provided.

cpp

main

copy
1234567891011121314
#include <iostream> template<typename T> T MyFirstTemplateReturn() { // Returning a default-initialized value of type T return T{}; } int main() { // Call the template with the void type std::cout << typeid(MyFirstTemplateReturn<void>()).name() << std::endl; }

In the example above, the function's return type is defined by the template parameter T. When we specify void as the type, the compiler interprets it accordingly.

Tarefa

Create a simple template that returns the passed value

  1. Write a simple template function called GetValue.
  2. Use the template's typename parameter as the return type.
  3. Add a parameter to the template function with the same type as the return type.
  4. Return the function's parameter.

Switch to desktopMude para o desktop para praticar no mundo realContinue de onde você está usando uma das opções abaixo
Seção 2. Capítulo 1
Switch to desktopMude para o desktop para praticar no mundo realContinue de onde você está usando uma das opções abaixo
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