Espaces de noms
Variantes

    std::tuple_size<std::pair>

    De cppreference.com
     
    C++
     
    Bibliothèque d'utilitaires
     
    std::pair
    Les fonctions membres
    Original:
    Member functions
    The text has been machine-translated via Google Translate.
    You can help to correct and verify the translation. Click here for instructions.
    pair::pair
    pair::operator=
    pair::swap
    Tiers fonctions
    Original:
    Non-member functions
    The text has been machine-translated via Google Translate.
    You can help to correct and verify the translation. Click here for instructions.
    make_pair
    operator=
    operator!=
    operator<
    operator<=
    operator>
    operator>=
    std::swap
    get (C++11)
    Classes d'aide
    Original:
    Helper classes
    The text has been machine-translated via Google Translate.
    You can help to correct and verify the translation. Click here for instructions.
    tuple_size (C++11)
    tuple_element (C++11)
     
    <tbody> </tbody>
    Déclaré dans l'en-tête <utility>
    template< class T1, class T2 > struct tuple_size<std::pair<T1, T2>>;
    		 (depuis C++11)
    La spécialisation partielle de std::tuple_size de paires fournit un moyen de compilation pour obtenir le nombre d'éléments dans une paire, qui est toujours 2, en utilisant une syntaxe tuple .
    Original:
    The partial specialization of std::tuple_size for pairs provides a compile-time way to obtain the number of elements in a pair, which is always 2, using tuple-like syntax.
    The text has been machine-translated via Google Translate.
    You can help to correct and verify the translation. Click here for instructions.

    Membres
    Original:
    Members
    The text has been machine-translated via Google Translate.
    You can help to correct and verify the translation. Click here for instructions.

    value
    [
    statique
    Original:
    static
    The text has been machine-translated via Google Translate.
    You can help to correct and verify the translation. Click here for instructions.
    ]
    solidaire de valeur constante 2
    Original:
    integral constant with value 2
    The text has been machine-translated via Google Translate.
    You can help to correct and verify the translation. Click here for instructions.

    (constante membre statique publique)

    Exemple

    #include <iostream>
#include <utility>
#include <tuple>

template<class T>
void test(T t)
{
    int a[std::tuple_size<T>::value]; // can be used at compile time
    std::cout << std::tuple_size<T>::value << '\n'; // or at run time
}

int main()
{
    test(std::make_tuple(1, 2, 3.14));
    test(std::make_pair(1, 3.14));
}

    Résultat : 

    3
2

    Voir aussi
    obtient la taille de tuple au moment de la compilation
    Original:
    obtains the size of tuple at compile time
    The text has been machine-translated via Google Translate.
    You can help to correct and verify the translation. Click here for instructions.

    (classe générique spécialisée) [edit]
    obtient la taille d'une array
    Original:
    obtains the size of an array
    The text has been machine-translated via Google Translate.
    You can help to correct and verify the translation. Click here for instructions.

    (classe générique spécialisée) [edit]
    (C++11)
    obtient le type des éléments de pair
    Original:
    obtains the type of the elements of pair
    The text has been machine-translated via Google Translate.
    You can help to correct and verify the translation. Click here for instructions.

    (classe générique spécialisée) [edit]