Varianti

    std::make_tuple

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    <metanoindex/>

     
    C++
     
    Utilità libreria
    Tipo di supporto (basic types, RTTI, type traits)
    Gestione della memoria dinamica
    La gestione degli errori
    Programma di utilità
    Funzioni variadic
    Data e ora
    Funzione oggetti
    initializer_list(C++11)
    bitset
    hash(C++11)
    Gli operatori relazionali
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    Relational operators
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    rel_ops::operator!=
    rel_ops::operator>
    rel_ops::operator<=
    rel_ops::operator>=
    Coppie e tuple
    Original:
    Pairs and tuples
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    pair
    tuple(C++11)
    piecewise_construct_t(C++11)
    piecewise_construct(C++11)
    Swap, in avanti e spostare
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    Swap, forward and move
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    swap
    forward(C++11)
    move(C++11)
    move_if_noexcept(C++11)
    declval(C++11)
     
    std::tuple
    Membri funzioni
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    Member functions
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    tuple::tuple
    tuple::operator=
    tuple::swap
    Non membri funzioni
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    Non-member functions
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    make_tuple
    tie
    forward_as_tuple
    None
    operator=
    operator!=
    operator<
    operator<=
    operator>
    operator>=
    std::swap
    get
    Helper classi
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    Helper classes
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    tuple_size
    tuple_element
    uses_allocator
    ignore
     
    <tbody> </tbody>
    Elemento definito nell'header <tuple>
    template< class... Types > tuple<VTypes...> make_tuple( Types&&... args );
    		 (dal C++11)

    Creates a tuple object, deducing the target type from the types of arguments. The deduced types are std::decay<Ti>::type (transformed as if passed to a function by value) unless application of std::decay results in std::reference_wrapper<X> for some type X, in which case the deduced type is is X&.

    Parametri

    args -
    zero o più argomenti per costruire la tupla da
    Original:
    zero or more arguments to construct the tuple from
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    Valore di ritorno

    A std::tuple object containing the given values.

    Esempio

    #include <iostream>
#include <tuple>
#include <functional>

int main()
{
    auto t1 = std::make_tuple(10, "Test", 3.14);
    std::cout << "The value of t1 is "
              << "(" << std::get<0>(t1) << ", " << std::get<1>(t1)
              << ", " << std::get<2>(t1) << ")\n";

    int n = 1;
    auto t2 = std::make_tuple(std::ref(n), n);
    n = 7;
    std::cout << "The value of t2 is "
              << "(" << std::get<0>(t2) << ", " << std::get<1>(t2) << ")\n";
}

    Output: 

    The value of t1 is (10, Test, 3.14)
The value of t2 is (7, 1)
    crea un tuple di riferimenti lvalue o spacchetta una tupla in singoli oggetti
    Original:
    creates a tuple of lvalue references or unpacks a tuple into individual objects
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    (funzione di modello) [modifica]
    crea un tuple di riferimenti rvalue
    Original:
    creates a tuple of rvalue references
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    (funzione di modello) [modifica]
    crea un tuple concatenando un numero qualsiasi di tuple
    Original:
    creates a tuple by concatenating any number of tuples
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    (funzione di modello) [modifica]