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    std::tuple

    De cppreference.com
     
    C++
     
    Bibliothèque d'utilitaires
     
    std::tuple
    Les fonctions membres
    Original:
    Member functions
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    tuple::tuple
    tuple::operator=
    tuple::swap
    Tiers fonctions
    Original:
    Non-member functions
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    make_tuple
    tie
    forward_as_tuple
    None
    operator=
    operator!=
    operator<
    operator<=
    operator>
    operator>=
    std::swap
    get
    Classes d'aide
    Original:
    Helper classes
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    tuple_size
    tuple_element
    uses_allocator
    ignore
     
    <tbody> </tbody>
    Déclaré dans l'en-tête <tuple>
    template< class... Types > class tuple;
    		 (depuis C++11)
    See More

    La class template std::tuple est une collection de taille fixe à valeurs hétérogènes. Il s'agit d'une généralisation de std::pair .

    Fonctions membres

    		 construit un nouveau tuple
    (fonction membre publique)
    		affecte le contenu d'un tuple à un autre
    (fonction membre publique)
    		échange les contenus de deux tuples
    (fonction membre publique)

    Fonctions tiers
    crée un objet tuple du type défini par les types d'arguments
    Original:
    creates a tuple object of the type defined by the argument types
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    (fonction générique) [edit]
    crée un tuple de références lvalue ou décompresse un tuple dans des objets individuels
    Original:
    creates a tuple of lvalue references or unpacks a tuple into individual objects
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    (fonction générique) [edit]
    crée un tuple des références rvalue
    Original:
    creates a tuple of rvalue references
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    (fonction générique) [edit]
    crée un tuple en concaténant un certain nombre de tuples
    Original:
    creates a tuple by concatenating any number of tuples
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    (fonction générique) [edit]
    tuple accède élément spécifié
    Original:
    tuple accesses specified element
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    (fonction générique) [edit]
    compare lexicographiquement les valeurs dans le tuple
    Original:
    lexicographically compares the values in the tuple
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    (fonction générique) [edit]
    (C++11)
    l'algorithme spécialisé std::swap
    Original:
    specializes the std::swap algorithm
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    (fonction générique) [edit]

    Classes d'aide
    obtient la taille de tuple au moment de la compilation
    Original:
    obtains the size of tuple at compile time
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    (classe générique spécialisée) [edit]
    obtient le type de l'élément spécifié
    Original:
    obtains the type of the specified element
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    (classe générique spécialisée) [edit]
    (C++11)
    se spécialise le trait de type std::uses_allocator
    Original:
    specializes the std::uses_allocator type trait
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    (classe générique spécialisée) [edit]
    		valeur réservée pour sauter un élément lorsque vous déballez un tuple utilisant tie
    (constante) [edit]

    Exemple

    #include <tuple>
#include <iostream>
#include <string>
#include <stdexcept>

std::tuple<double, char, std::string> get_student(int id)
{
    if (id == 0) return std::make_tuple(3.8, 'A', "Lisa Simpson");
    if (id == 1) return std::make_tuple(2.9, 'C', "Milhouse Van Houten");
    if (id == 2) return std::make_tuple(1.7, 'D', "Ralph Wiggum");
    throw std::invalid_argument("id");
}

int main()
{
    auto student0 = get_student(0);
    std::cout << "ID : 0, "
              << "GPA : " << std::get<0>(student0) << ", "
              << "note : " << std::get<1>(student0) << ", "
              << "nom : " << std::get<2>(student0) << '\n';

    double gpa1;
    char grade1;
    std::string name1;
    std::tie(gpa1, grade1, name1) = get_student(1);
    std::cout << "ID : 1, "
              << "GPA : " << gpa1 << ", "
              << "note : " << grade1 << ", "
              << "nom : " << name1 << '\n';
}