std::uses_allocator<std::tuple>
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| Defined in header <tuple>
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| template< class... Types, class Alloc > struct uses_allocator< std::tuple<Types...>, Alloc > : std::true_type { }; |
(a partir do C++ 11) | |
Esta especialização de std::uses_allocator informa que outros componentes da biblioteca tuplas apoio' usos alocador-construção, mesmo que eles não têm um
allocator_type aninhada.Original:
This specialization of std::uses_allocator informs other library components that tuples support uses-allocator construction, even though they do not have a nested
allocator_type.The text has been machine-translated via Google Translate.
You can help to correct and verify the translation. Click here for instructions.
You can help to correct and verify the translation. Click here for instructions.
Índice |
Inherited from std::integral_constant
Member constants
| value [estática] |
true (membro estático público constante) |
Member functions
| operator bool |
converte o objeto em bool, retorna value Original: converts the object to bool, returns value The text has been machine-translated via Google Translate. You can help to correct and verify the translation. Click here for instructions. (função pública membro) |
Member types
| Tipo
Original: Type The text has been machine-translated via Google Translate. You can help to correct and verify the translation. Click here for instructions. |
Definition |
value_type
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bool
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type
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std::integral_constant<bool, value> |
[editar] Exemplo
// myalloc is a stateful Allocator with a single-argument constructor // that takes an int. It has no default constructor. typedef std::vector<int, myalloc<int>> innervector_t; typedef std::tuple<int, innervector_t> elem_t; typedef std::scoped_allocator_adaptor< myalloc<elem_t>, myalloc<int>> Alloc; Alloc a(1,2); std::vector<elem_t, Alloc> v(a); v.resize(1); // uses allocator #1 for elements of v std::get<1>(v[0]).resize(10); // uses allocator #2 for innervector_t
[editar] Veja também
| (C++11) |
verifica se o tipo especificado suporta usos alocador-construção Original: checks if the specified type supports uses-allocator construction The text has been machine-translated via Google Translate. You can help to correct and verify the translation. Click here for instructions. (modelo de classe) |