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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>

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< cpp‎ | utility‎ | tuple

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C++
 
Biblioteca de utilitários
Digite apoio (basic types, RTTI, type traits)
Gerenciamento de memória dinâmica
De tratamento de erros
Utilidades do programa
Variadic funções
Data e hora
Objetos de função
(C++11)
(C++11)
Os operadores relacionais
Original:
Relational operators
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rel_ops::operator!=
rel_ops::operator>
rel_ops::operator<=
rel_ops::operator>=
Pares e tuplas
Original:
Pairs and tuples
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(C++11)
(C++11)
(C++11)
Troque, avançar e avançar
Original:
Swap, forward and move
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(C++11)
(C++11)
(C++11)
(C++11)
 
std::tuple
Funções de membro
Original:
Member functions
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tuple::tuple
tuple::operator=
tuple::swap
Não-membros funções
Original:
Non-member functions
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Classes auxiliares
Original:
Helper classes
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tuple_element
 
Definido no cabeçalho <tuple>
template< std::size_t I, class T >
class tuple_element; /* undefined */
 (1) (desde C++11)
template< std::size_t I, class... Types >
class tuple_element< I, tuple<Types...> >;
 (2) (desde C++11)
template< std::size_t I, class T >

class tuple_element< I, const T > {
  typedef typename
      std::add_const<typename std::tuple_element<I, T>::type>::type type;

};
 (3) (desde C++11)
template< std::size_t I, class T >

class tuple_element< I, volatile T > {
  typedef typename
      std::add_volatile<typename std::tuple_element<I, T>::type>::type type;

};
 (4) (desde C++11)
template< size_t I, class T >

class tuple_element< I, const volatile T > {
  typedef typename
      std::add_cv<typename std::tuple_element<I, T>::type>::type type;

};
 (5) (desde C++11)
Fornece compilação do tipo de acesso indexado aos tipos de elementos do tuplo.
Original:
Provides compile-type indexed access to the types of the elements of the tuple.
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Índice

[editar] Tipos de membro

Tipo de membro
Original:
Member type
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 Definition
type
o tipo de elemento Ith da tupla, onde I está na [0, sizeof...(Types))
Original:
the type of Ith element of the tuple, where I is in [0, sizeof...(Types))
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[editar] Possível implementação

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

[editar] Exemplo

Esta seção está incompleta
Motivo: sem exemplo

[editar] Veja também
obtém o tipo dos elementos de array
Original:
obtains the type of the elements of array
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(especialização modelo. classe) [edit]
(C++11)
obtém o tipo dos elementos de pair
Original:
obtains the type of the elements of pair
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(especialização modelo. classe) [edit]
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