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std::scoped_allocator_adaptor::scoped_allocator_adaptor

From cppreference.com
 
 
Dynamic memory management
Uninitialized storage
(C++17)
(deprecated since c++17)
(deprecated since c++17)
(deprecated since c++17)
Garbage collection support
Miscellaneous
(C++11)
(C++11)
C Library
Low level memory management
 
 
Defined in header <scoped_allocator>
scoped_allocator_adaptor();
(1) (since C++11)
template< class OuterA2 >
scoped_allocator_adaptor( OuterA2&& outerAlloc, const InnerAllocs&... innerAllocs) noexcept;
(2) (since C++11)
scoped_allocator_adaptor( const scoped_allocator_adaptor& other ) noexcept;
(3) (since C++11)
scoped_allocator_adaptor( scoped_allocator_adaptor&& other ) noexcept;
(4) (since C++11)
template< class OuterA2 >
scoped_allocator_adaptor( const scoped_allocator_adaptor<OuterA2, InnerAllocs...>& other )  noexcept;
(5) (since C++11)
template< class OuterA2 >
scoped_allocator_adaptor( scoped_allocator_adaptor<OuterA2, InnerAllocs...>&& other ) noexcept;
(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 only participates in overload resolution 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 only participates in overload resolution 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 only participates in overload resolution if std::is_constructible<OuterAlloc, OuterA2>::value is true.

Contents

[edit] Parameters

outerAlloc - constructor argument for the outer allocator
innerAllocs... - constructor arguments for the inner allocators
other - another std::scoped_allocator_adaptor

[edit] Exceptions

2-6)
noexcept specification:  
noexcept
  

[edit] 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

[edit] See also

allocates uninitialized storage using the outer allocator
(public member function) [edit]
constructs an object in allocated storage, passing the inner allocator to its constructor if appropriate
(public member function) [edit]