std::tuple_element<div class="t-tr-text"><std::tuple><div class="t-tr-dropdown"><div><div><div class="t-tr-dropdown-arrow-border"></div><div class="t-tr-dropdown-arrow"></div><div class="t-tr-dropdown-h">Original:</div><div class="t-tr-dropdown-orig"><std::tuple></div><div class="t-tr-dropdown-notes">The text has been machine-translated via [http://translate.google.com Google Translate].<br/> You can help to correct and verify the translation. Click [http://en.cppreference.com/w/Cppreference:MachineTranslations here] for instructions.</div></div></div></div></div>

 

C++

Linguaggio

Concetti

Libreria di Utilità

Stringhe

Contenitori

Algoritmi

Iteratori

Libreria matematca

Input/output

Localizzazione

Espressioni regolari(C++11)

Operazioni atomicche(C++11)

Multithreading(C++11)

 

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

rel_ops::operator!= rel_ops::operator> rel_ops::operator<= rel_ops::operator>=

Coppie e tuple Original: Pairs and tuples The text has been machine-translated via Google Translate. You can help to correct and verify the translation. Click here for instructions.

pair

tuple (C++11)

piecewise_construct_t (C++11)

piecewise_construct (C++11)

Swap, in avanti e spostare Original: Swap, forward and move The text has been machine-translated via Google Translate. You can help to correct and verify the translation. Click here for instructions.

swap

forward (C++11)

move (C++11)

move_if_noexcept (C++11)

declval (C++11)

 

std::tuple

Membri funzioni 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.

tuple::tuple

tuple::operator=

tuple::swap

Non membri funzioni 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_tuple

tie

forward_as_tuple

None

operator= operator!= operator< operator<= operator> operator>=

std::swap

get

Helper classi 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

tuple_element

uses_allocator

ignore

 

Elemento definito nell'header <tuple>
template<std::size_t I, class T > class tuple_element;/* undefined */	(1)	(dal C++11)
template<std::size_t I, class... Types> class tuple_element< I, tuple<Types...>>;	(2)	(dal C++11)
template<std::size_t I, class T > class tuple_element< I, const T >{   typedeftypename       std::add_const<typename std::tuple_element<I, T>::type>::type type; };	(3)	(dal C++11)
template<std::size_t I, class T > class tuple_element< I, volatile T >{   typedeftypename       std::add_volatile<typename std::tuple_element<I, T>::type>::type type; };	(4)	(dal C++11)
template< size_t I, class T > class tuple_element< I, constvolatile T >{   typedeftypename       std::add_cv<typename std::tuple_element<I, T>::type>::type type; };	(5)	(dal C++11)

Fornisce di compilazione tipo di accesso indicizzato ai tipi di elementi della tupla.

Original:

Provides compile-type indexed access to the types of the elements of the tuple.

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Membri tipi

Membro tipo Original: Member type The text has been machine-translated via Google Translate. You can help to correct and verify the translation. Click here for instructions.	Definition
type	il tipo di elemento Ith della tupla, dove è in I[0, sizeof...(Types)) Original: the type of Ith element of the tuple, where I is in [0, sizeof...(Types)) The text has been machine-translated via Google Translate. You can help to correct and verify the translation. Click here for instructions.

Possibile implementazione

template<std::size_t I, class T >struct tuple_element;   // recursive casetemplate<std::size_t I, class Head, class... Tail>struct tuple_element<I, std::tuple<Head, Tail...>>: std::tuple_element<I-1, std::tuple<Tail...>>{};   // base casetemplate<class Head, class... Tail>struct tuple_element<0, std::tuple<Head, Tail...>>{typedef Head type;};

Vedi anche

std::tuple_element<std::array>	ottiene il tipo di elementi di array Original: obtains the type of the elements of array The text has been machine-translated via Google Translate. You can help to correct and verify the translation. Click here for instructions. (classe modello di specializzazione)
std::tuple_element<std::pair> (C++11)	ottiene il tipo di elementi di 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 modello di specializzazione)