std::uses_allocator

 

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Os operadores relacionais 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>=

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Alocadores Original: Allocators The text has been machine-translated via Google Translate. You can help to correct and verify the translation. Click here for instructions.
allocator
allocator_traits (C++11)
allocator_arg_t (C++11)
allocator_arg (C++11)
uses_allocator (C++11)
scoped_allocator_adaptor (C++11)
Uninitialized armazenamento Original: Uninitialized storage The text has been machine-translated via Google Translate. You can help to correct and verify the translation. Click here for instructions.
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uninitialized_copy_n (C++11)
uninitialized_fill
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Ponteiros inteligentes Original: Smart pointers The text has been machine-translated via Google Translate. You can help to correct and verify the translation. Click here for instructions.
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C Library Original: C Library The text has been machine-translated via Google Translate. You can help to correct and verify the translation. Click here for instructions.
malloc calloc	realloc free

 

Definido no cabeçalho <memory>
template<class T, class Alloc > struct uses_allocator		(desde C++11)

Se T tem um membro allocator_type typedef que é convertível de Alloc, fornece o membro constante igual a valuetrue. Caso contrário value é false.

Original:

If T has a member typedef allocator_type which is convertible from Alloc, provides the member constant value equal to true. Otherwise value is false.

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Herdado de std::integral_constant

Member constants

value [estática]	true se T uses allocator Alloc, false contrário Original: true if T uses allocator Alloc, false otherwise The text has been machine-translated via Google Translate. You can help to correct and verify the translation. Click here for instructions. (membro estático público constante)

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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	bool
type	std::integral_constant<bool, value>

Especializações

Especializações personalizados do traço tipo std::uses_allocator são permitidos para tipos que não têm o allocator_type membro typedef mas satisfazer um dos seguintes requisitos:

Original:

Custom specializations of the type trait std::uses_allocator are allowed for types that do not have the member typedef allocator_type but satisfy one of the following two requirements:

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1)

T tem um construtor que leva std::allocator_arg_t como o primeiro argumento, e Alloc como segundo argumento.

Original:

T has a constructor which takes std::allocator_arg_t as the first argument, and Alloc as the second argument.

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2)

T tem um construtor que leva Alloc como último argumento.

Original:

T has a constructor which takes Alloc as the last argument.

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Os seguintes especializações já são fornecidas pela biblioteca padrão:

Original:

The following specializations are already provided by the standard library:

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std::uses_allocator<std::tuple> (C++11)	especializa o traço tipo std::uses_allocator Original: specializes the std::uses_allocator type trait The text has been machine-translated via Google Translate. You can help to correct and verify the translation. Click here for instructions. (especialização modelo. classe)
std::uses_allocator<std::queue> (C++11)	especializa o traço tipo std::uses_allocator Original: specializes the std::uses_allocator type trait The text has been machine-translated via Google Translate. You can help to correct and verify the translation. Click here for instructions. (modelo de função)
std::uses_allocator<std::priority_queue> (C++11)	especializa o traço tipo std::uses_allocator Original: specializes the std::uses_allocator type trait The text has been machine-translated via Google Translate. You can help to correct and verify the translation. Click here for instructions. (modelo de função)
std::uses_allocator<std::stack> (C++11)	especializa o traço tipo std::uses_allocator Original: specializes the std::uses_allocator type trait The text has been machine-translated via Google Translate. You can help to correct and verify the translation. Click here for instructions. (modelo de função)
std::uses_allocator<std::function> (C++11)	especializa o traço tipo std::uses_allocator Original: specializes the std::uses_allocator type trait The text has been machine-translated via Google Translate. You can help to correct and verify the translation. Click here for instructions. (especialização modelo. classe)
std::uses_allocator<std::promise> (C++11)	especializa o traço tipo std::uses_allocator Original: specializes the std::uses_allocator type trait The text has been machine-translated via Google Translate. You can help to correct and verify the translation. Click here for instructions. (especialização modelo. classe)
std::uses_allocator<std::packaged_task> (C++11)	especializa o traço tipo std::uses_allocator Original: specializes the std::uses_allocator type trait The text has been machine-translated via Google Translate. You can help to correct and verify the translation. Click here for instructions. (especialização modelo. classe)

Notas

Esta característica tipo é utilizado por std::scoped_allocator_adaptor e pode ser usado por allocators personalizados para determinar se o objecto a ser construído é-se capaz de usar um alocador (por exemplo, é um recipiente), caso em que um alocador devem ser passados ​​para o construtor.

Original:

This type trait is used by std::scoped_allocator_adaptor and may be used by custom allocators to determine whether the object being constructed is itself capable of using an allocator (e.g. is a container), in which case an allocator should be passed to its constructor.

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Veja também

allocator_arg (C++11)	um objeto de std::allocator_arg_t tipo usado para selecionar alocador de reconhecimento de construtores Original: an object of type std::allocator_arg_t used to select allocator-aware constructors The text has been machine-translated via Google Translate. You can help to correct and verify the translation. Click here for instructions. (constante)
allocator_arg_t (C++11)	tipo de etiqueta usada para selecionar sobrecargas alocador de reconhecimento do construtor Original: tag type used to select allocator-aware constructor overloads The text has been machine-translated via Google Translate. You can help to correct and verify the translation. Click here for instructions. (classe)
scoped_allocator_adaptor (C++11)	implementa multi-nível alocador de multi-nível de contêineres Original: implements multi-level allocator for multi-level containers 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)