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std::uses_allocator

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C++
 
Утилиты библиотеки
 
Динамическое управление памятью
Низкий уровень управления памятью
Распределители
Original:
Allocators
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allocator
allocator_traits(C++11)
allocator_arg_t(C++11)
allocator_arg(C++11)
uses_allocator(C++11)
scoped_allocator_adaptor(C++11)
Неинициализированные хранения
Original:
Uninitialized storage
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uninitialized_copy
uninitialized_copy_n(C++11)
uninitialized_fill
uninitialized_fill_n
raw_storage_iterator
get_temporary_buffer
return_temporary_buffer
Умные указатели
Original:
Smart pointers
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unique_ptr(C++11)
shared_ptr(C++11)
weak_ptr(C++11)
auto_ptr(устарело)
owner_less(C++11)
enable_shared_from_this(C++11)
bad_weak_ptr(C++11)
default_delete(C++11)
Поддержка сборки мусора
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Garbage collection support
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declare_reachable(C++11)
undeclare_reachable(C++11)
declare_no_pointers(C++11)
undeclare_no_pointers(C++11)
pointer_safety(C++11)
get_pointer_safety(C++11)
Разное
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Miscellaneous
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pointer_traits(C++11)
addressof(C++11)
align(C++11)
C Library
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C Library
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Заголовочный файл <memory>
template< class T, class Alloc >
struct uses_allocator
 (начиная с C++11)
Если T имеет член ЬурейеЕ allocator_type которая кабриолет от Alloc, обеспечивает постоянный член value равно true. В противном случае value является 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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Содержание

Унаследован от std::integral_constant

Member constants

value
[static]
true если T uses allocator Alloc, false иначе
Original:
true if T uses allocator Alloc, false otherwise
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(public static константа-член)

Member functions

operator bool
преобразует объект в bool, возвращает value
Original:
converts the object to bool, returns value
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(public функция-член)

Member types

Type
Original:
Type
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 Definition
value_type bool
type std::integral_constant<bool, value>

[править] Специализации

Пользовательские специализации типа черту std::uses_allocator допускается для типов, которые не имеют членов ЬурейеЕ allocator_type, но удовлетворяют одному из следующих двух требований:
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 имеет конструктор, который принимает std::allocator_arg_t в качестве первого аргумента, и Alloc в качестве второго аргумента.
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 имеет конструктор, который принимает Alloc в качестве последнего аргумента.
Original:
T has a constructor which takes Alloc as the last argument.
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Следующим специализациям уже предусмотрены в стандартной библиотеке
Original:
The following specializations are already provided by the standard library:
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(C++11)
Специализируется черта std::uses_allocator типа
Original:
specializes the std::uses_allocator type trait
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(специализация шаблона класса) [edit]
(C++11)
Специализируется черта std::uses_allocator типа
Original:
specializes the std::uses_allocator type trait
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(шаблон функции) [edit]
(C++11)
Специализируется черта std::uses_allocator типа
Original:
specializes the std::uses_allocator type trait
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(шаблон функции) [edit]
(C++11)
Специализируется черта std::uses_allocator типа
Original:
specializes the std::uses_allocator type trait
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(шаблон функции) [edit]
(C++11)
Специализируется черта std::uses_allocator типа
Original:
specializes the std::uses_allocator type trait
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(специализация шаблона класса) [edit]
(C++11)
Специализируется черта std::uses_allocator типа
Original:
specializes the std::uses_allocator type trait
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(специализация шаблона класса) [edit]
(C++11)
Специализируется черта std::uses_allocator типа
Original:
specializes the std::uses_allocator type trait
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(специализация шаблона класса) [edit]

[править] Notes

Этот тип черта используется std::scoped_allocator_adaptor и могут быть использованы пользовательские распределители, чтобы определить, является ли объект строится сама способна использовать распределитель (например, является контейнером), в этом случае распределителя должны быть переданы в конструктор.
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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[править] См. также

(C++11)
Объект типа std::allocator_arg_t используется для выбора распределитель-Aware конструкторов
Original:
an object of type std::allocator_arg_t used to select allocator-aware constructors
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(константа) [edit]
(C++11)
тег типа используются для выбора распределитель-Aware перегрузок конструктора
Original:
tag type used to select allocator-aware constructor overloads
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(класс) [edit]
(C++11)
реализует многоуровневую распределитель для многоуровневых контейнеров
Original:
implements multi-level allocator for multi-level containers
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(шаблон класса) [edit]
Источник — «http://ru.cppreference.com/mwiki/index.php?title=cpp/memory/uses_allocator&oldid=27655»