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std::is_member_function_pointer — cppreference.com

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Déclaré dans l'en-tête

<type_traits>

template< class T > struct is_member_function_pointer;

(depuis C++11)

Si T est un pointeur vers une fonction membre non statique, fournit du membre de constante value true égale. Pour tout autre type, value est false .

Original:

If T is pointer to non-static member function, provides the member constant value equal true. For any other type, value is false.

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Inherited from std::integral_constant

Member constants

value

[

statique

Original:

static

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]

true si T is a member function pointer type , false autrement

Original:

true if T is a member function pointer type , false otherwise

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(constante membre statique publique)

Member functions

convertit l'objet en bool, retourne value

Original:

converts the object to bool, returns value

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(fonction membre publique)

Member types

Type d'

Original:

Type

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Definition
value_type bool
type std::integral_constant<bool, value>

Mise en œuvre possible

template< class T >
struct is_member_function_pointer_helper : std::false_type {};

template< class T, class U>
struct is_member_function_pointer_helper<T U::*> : std::is_function<T> {};

template< class T >
struct is_member_function_pointer : is_member_function_pointer_helper<
                                        typename std::remove_cv<T>::type
                                    > {};

Exemple

#include <type_traits>

class A {
    void member_function() { }
};

// fails at compile time if A does not contain member_function as a function.

static_assert<std::is_member_function_pointer<decltype(&A::member_function)>::value,
                      "Class does not contain member.");

Voir aussi

(C++11)

vérifie si un type est un type pointeur

Original:

checks if a type is a pointer type

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(classe générique) [edit]

vérifie si un type est un pointeur vers un objet membre non statique

Original:

checks if a type is a pointer to a non-static member object

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(classe générique) [edit]

vérifie si un type est un pointeur vers une fonction membre non statique ou d'un objet

Original:

checks if a type is a pointer to a non-static member function or object

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(classe générique) [edit]