std::scoped_allocator_adaptor<OuterAlloc,InnerAlloc...>::scoped_allocator_adaptor
From cppreference.com
< cpp | memory | scoped allocator adaptor
| Defined in header <scoped_allocator>
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| scoped_allocator_adaptor(); |
(1) | (since C++11) |
| template< class OuterA2 > scoped_allocator_adaptor( |
(2) | (since C++11) |
| scoped_allocator_adaptor( const scoped_allocator_adaptor& other |
(3) | (since C++11) |
| scoped_allocator_adaptor( scoped_allocator_adaptor&& other |
(4) | (since C++11) |
| template< class OuterA2 > scoped_allocator_adaptor( |
(5) | (since C++11) |
| template< class OuterA2 > scoped_allocator_adaptor( |
(6) | (since C++11) |
1) Default constructor: value-initializes the
OuterAlloc base class and the inner allocator member object, if used by the implementation.2) Constructs the base class
OuterAlloc from std::forward<OuterA2>(outerAlloc), and the inner allocators with innerAllocs.... This overload participates in overload resolution only if std::is_constructible<OuterAlloc, OuterA2>::value is true.3) Copy-constructor: initializes each allocator from the corresponding allocator of other.
4) Move-constructor: moves each allocator from the corresponding allocator of other into *this.
5) Initializes each allocator from the corresponding allocator of other. This overload participates in overload resolution only if std::is_constructible<OuterAlloc, const OuterA2&>::value is true.
6) Initializes each allocator from the corresponding allocator of other, using move semantics. This overload participates in overload resolution only if std::is_constructible<OuterAlloc, OuterA2>::value is true.
Parameters
| outerAlloc | - | constructor argument for the outer allocator |
| innerAllocs... | - | constructor arguments for the inner allocators |
| other | - | another std::scoped_allocator_adaptor
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Defect reports
The following behavior-changing defect reports were applied retroactively to previously published C++ standards.
| DR | Applied to | Behavior as published | Correct behavior |
|---|---|---|---|
| LWG 2782 | C++11 | constructors taking OuterA2 weren't constrained, interfering with metaprogramming
|
constraint added |
See also
| allocates uninitialized storage using the outer allocator (public member function) | |
| constructs an object in allocated storage, passing the inner allocator to its constructor if appropriate (public member function) |