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std::allocator_traits::construct

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C++
 
La gestion dynamique de la mémoire
Faible niveau de gestion de la mémoire
Répartiteurs
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)
Non initialisée stockage
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
Pointeurs intelligents
Original:
Smart pointers
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unique_ptr (C++11)
shared_ptr (C++11)
weak_ptr (C++11)
auto_ptr (obsolète)
owner_less (C++11)
enable_shared_from_this (C++11)
bad_weak_ptr (C++11)
default_delete (C++11)
Soutien garbage collection
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)
Divers
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Miscellaneous
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pointer_traits (C++11)
addressof (C++11)
align (C++11)
Bibliothèque C
Original:
C Library
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std::allocator_traits
Les fonctions membres
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
 
Déclaré dans l'en-tête <memory>
template< class T, class... Args >
static void construct( Alloc& a, T* p, Args&&... args );
 (depuis C++11)
Si possible, construit un objet de type T de stockage alloué non initialisée pointé par p, en appelant
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 ce qui précède n'est pas possible (par exemple a n'a pas la fonction membre construct(),), puis appelle le placement-nouveau
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)...)

Sommaire

[modifier] Paramètres

a -
allocateur à utiliser pour la construction
Original:
allocator to use for construction
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args... -
les arguments du constructeur pour passer à a.construct() ou au placement neuf
Original:
the constructor arguments to pass to a.construct() or to placement-new
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[modifier] Retourne la valeur

(Aucun)
Original:
(none)
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[modifier] Notes

Cette fonction est utilisée par les conteneurs de la bibliothèque standard lors de l'insertion, de copier ou éléments mobiles .
Original:
This function is used by the standard library containers when inserting, copying, or moving elements.
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Parce que cette fonction fournit la chute automatique de retour vers nouveau placement, le construct() fonction membre est une condition Allocator option puisque le 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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[modifier] Voir aussi
fonctions d'allocation
Original:
allocation functions
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(fonction) [edit]
construit un objet de stockage alloué
Original:
constructs an object in allocated storage
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(fonction membre publique de std::allocator) [edit]
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