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std::allocator_traits::construct

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Gerenciamento de memória dinâmica
Gerenciamento de memória de baixo nível
Alocadores
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)
Uninitialized armazenamento
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
Ponteiros inteligentes
Original:
Smart pointers
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unique_ptr(C++11)
shared_ptr(C++11)
weak_ptr(C++11)
auto_ptr(obsoleta)
owner_less(C++11)
enable_shared_from_this(C++11)
bad_weak_ptr(C++11)
default_delete(C++11)
Apoio a coleta de lixo
Original:
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)
Diversos
Original:
Miscellaneous
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pointer_traits(C++11)
addressof(C++11)
align(C++11)
C Library
Original:
C Library
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std::allocator_traits
Funções de membro
Original:
Member functions
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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 );
(a partir do C++ 11)
Se possível, constrói um objeto de T tipo de armazenamento alocado não inicializado apontado por p, chamando
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)...)

Se o acima não é possível (por exemplo a não tem a função de membro construct(),), depois chama a colocação de novos como
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)...)

Índice

[editar] Parâmetros

a -
alocador de usar para a construção
Original:
allocator to use for construction
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args... -
os argumentos do construtor para passar para a.construct() ou a colocação de novo
Original:
the constructor arguments to pass to a.construct() or to placement-new
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[editar] Valor de retorno

(Nenhum)
Original:
(none)
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[editar] Notas

Esta função é usada pelos contêineres da biblioteca padrão ao inserir, copiar ou de elementos móveis.
Original:
This function is used by the standard library containers when inserting, copying, or moving elements.
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Como essa função fornece a queda automática de volta para nova colocação, o construct() função de membro é uma exigência Allocator opcional 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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[editar] Veja também

funções de alocação
Original:
allocation functions
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(função) [edit]
constrói um objeto no armazenamento alocado
Original:
constructs an object in allocated storage
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(of std::allocator função pública membro) [edit]