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std::make_tuple

De cppreference.com
< cpp‎ | utility‎ | tuple

 
 
Utilidades de la biblioteca
Escriba apoyo (basic types, RTTI, type traits)
Gestión de memoria dinámica
Gestión de errores
Programa de servicios públicos
Funciones variadic
Fecha y hora
Objetos Function
(C++11)
Operadores relacionales
Original:
Relational operators
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Pares y tuplas
Original:
Pairs and tuples
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(C++11)
Cambiar, hacia adelante y mover
Original:
Swap, forward and move
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(C++11)
(C++11)
(C++11)
 
std::tuple
Las funciones miembro
Original:
Member functions
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Terceros funciones
Original:
Non-member functions
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make_tuple
Clases de ayuda
Original:
Helper classes
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Definido en la cabecera <tuple>
template< class... Types >
tuple<VTypes...> make_tuple( Types&&... args );
(desde 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&.

[editar] Parámetros

args -
cero o más argumentos para construir la tupla
Original:
zero or more arguments to construct the tuple from
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[editar] Valor de retorno

A std::tuple object containing the given values.

[editar] Ejemplo

#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";
}

Salida:

The value of t1 is (10, Test, 3.14)
The value of t2 is (7, 1)
crea una tuple de referencias lvalue o desempaqueta una tupla en objetos individuales
Original:
creates a tuple of lvalue references or unpacks a tuple into individual objects
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(plantilla de función) [editar]
crea un tuple de referencias rvalue
Original:
creates a tuple of rvalue references
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(plantilla de función) [editar]
crea un tuple mediante la concatenación de cualquier número de tuplas
Original:
creates a tuple by concatenating any number of tuples
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(plantilla de función) [editar]