vcl::Cloneable Concept Reference

Concept that is evaluated true if T is a cloneable object. More...

#include <vclib/concepts/polymorphism.h>

Concept definition

template<typename T>
concept vcl::Cloneable =  requires (T&& obj) {
    
    
    
    
    
    
    
    
    
    
    
    
    
    
    
    
    
    
    
    
    
    
    
    
    
    { obj.clone() } -> std::same_as<std::shared_ptr<std::remove_cvref_t<T>>>;
}

Detailed Description

Concept that is evaluated true if T is a cloneable object.

A cloneable object is an object that can be cloned by calling the method clone(), which returns a shared pointer to the cloned object.

Cloneable objects are useful when polymorphism is needed, and the object needs to be copied without knowing the exact type of the object:

std::shared_ptr<Shape> circle = std::make_shared<Circle>();
 
std::shared_ptr<Shape> clonedCircle = circle->clone();

Template Parameters

T	The type to be checked if it is cloneable.