std::allocator_traits::construct – cppreference.com

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definiert in Header `<memory>`

`template< class T, class... Args > static void construct( Alloc& a, T* p, Args&&... args );`		(seit C++11)

Wenn möglich, baut ein Objekt vom Typ T in zugewiesenen initialisierten Speicher, auf den p, indem

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)...)

Wenn die oben nicht möglich ist (zB a nicht die Member-Funktion construct(),), dann ruft Placement-new als

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)...)

Parameter

a	-	allocator um zur Konstruktion verwenden 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...	-	die Konstruktorargumente zu `a.construct()` oder placement-neue passieren 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.

Rückgabewert

(None)

Original:

(none)

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Notes

Diese Funktion wird durch die Standard-Bibliothek Behälter verwendet werden, wenn das Einfügen, Kopieren oder Verschieben Elementen .

Original:

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

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Da diese Funktion ermöglicht die automatische Fallback, um die Platzierung neuer, die Member-Funktion construct() ist ein optionales Allocator Anforderung, da 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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Siehe auch


	Speicheranforderungsfunktion (Funktion) [edit]

	baut ein Objekt in zugewiesenen Lagerstätten 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. (öffentliche Elementfunktion of `std::allocator`) [edit]