std::allocator_traits::construct

 

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Gestión de memoria dinámica

Bajo la gestión de memoria de nivel
Los asignadores 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)
Inicializar el almacenamiento 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.
uninitialized_copy
uninitialized_copy_n (C++11)
uninitialized_fill
uninitialized_fill_n
raw_storage_iterator
get_temporary_buffer
return_temporary_buffer
Punteros 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.
unique_ptr (C++11)
shared_ptr (C++11)
weak_ptr (C++11)
auto_ptr (obsoleto)
owner_less (C++11)
enable_shared_from_this (C++11)
bad_weak_ptr (C++11)
default_delete (C++11)
Garbage soporte colección Original: Garbage collection support The text has been machine-translated via Google Translate. You can help to correct and verify the translation. Click here for instructions.
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)
Varios Original: Miscellaneous The text has been machine-translated via Google Translate. You can help to correct and verify the translation. Click here for instructions.
pointer_traits (C++11)
addressof (C++11)
align (C++11)
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

 

std::allocator_traits

Las funciones miembro 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.

allocator_traits::allocate

allocator_traits::deallocate

allocator_traits::construct

allocator_traits::destroy

allocator_traits::max_size

allocator_traits::select_on_container_copy_construction

 

Defined in header <memory>
template< class T, class... Args > static void construct( Alloc& a, T* p, Args&&... args );		(ya que C + +11)

Si es posible, crea un objeto de tipo T en almacenamiento asignado sin inicializar apuntado por p, llamando

Original:

If possible, constructs an object of type T in allocated uninitialized storage pointed to by p, by calling

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a.construct(p, std::forward<Args>(args)...)

Si lo anterior no es posible (por ejemplo a no tiene la función miembro construct(),), entonces llama a la colocación-como nuevo

Original:

If the above is not possible (e.g. a does not have the member function construct(),), then calls placement-new as

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    ::new (static_cast<void*>(p)) T(std::forward<Args>(args)...)

Parámetros

a	-	asignador de usar para la construcción Original: allocator to use for construction The text has been machine-translated via Google Translate. You can help to correct and verify the translation. Click here for instructions.
args...	-	los argumentos del constructor para pasar a a.construct() o para la colocación de nuevo Original: the constructor arguments to pass to a.construct() or to placement-new The text has been machine-translated via Google Translate. You can help to correct and verify the translation. Click here for instructions.

Valor de retorno

(Ninguno)

Original:

(none)

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Notas

Esta función es utilizada por los contenedores de la biblioteca estándar al insertar, copiar o elementos móviles .

Original:

This function is used by the standard library containers when inserting, copying, or moving elements.

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Debido a que esta función proporciona la caída automática al nuevo emplazamiento, el construct() función miembro es un requisito opcional Allocator desde C + 11 .

Original:

Because this function provides the automatic fall back to placement new, the member function construct() is an optional Allocator requirement since C++11.

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Ver también

operator new operator new[]	funciones de asignación Original: allocation functions The text has been machine-translated via Google Translate. You can help to correct and verify the translation. Click here for instructions. (función)
construct	construye un objeto de almacenamiento asignado Original: constructs an object in allocated storage The text has been machine-translated via Google Translate. You can help to correct and verify the translation. Click here for instructions. (miembro público of std::allocator función)