std::scoped_allocator_adaptor<OuterAlloc,InnerAlloc...>:: scoped_allocator_adaptor
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 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 |
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) |
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