std::polymorphic<T, Allocator>::swap

 

C++

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std::polymorphic

Member functions

polymorphic::polymorphic

polymorphic::~polymorphic

polymorphic::operator=

Observers

polymorphic::operator->polymorphic::operator*

polymorphic::valueless_after_move

polymorphic::get_allocator

Modifiers

polymorphic::swap

Non-member functions

swap(std::polymorphic)

 

constexpr void swap( polymorphic& other ) noexcept(/* see below */);		(since C++26)

Swaps the contents with those of other.

In the description below, swap_allocators refers to std::allocator_traits<Allocator>::propagate_on_container_swap::value.

Swaps the states of *this and other, exchanging owned objects or valueless states.

• If swap_allocators is true, then executes using std::swap;
  swap(alloc , other.alloc );.
• Otherwise, the allocators are not swapped.

If one of the following conditions is satisfied, the behavior is undefined:

• swap_allocators is true, and Allocator does not satisfy the requirements of Swappable.
• swap_allocators is false, and get_allocator() == other.get_allocator() is false.

Parameters

other

-

the polymorphic object to exchange the contents with

Exceptions

noexcept specification:  

noexcept(std::allocator_traits<Allocator>::propagate_on_container_swap::value
             || std::allocator_traits<Allocator>::is_always_equal::value)

Example

See also

std::swap(std::polymorphic) (C++26)

specializes the std::swap algorithm (function template)

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