std::unordered_map::swap
From cppreference.com
< cpp | container | unordered map
| void swap( unordered_map& other );
|
(since C++11) | |
Exchanges the contents of the container with those of other. Does not invoke any move, copy, or swap operations on individual elements.
All iterators and references remain valid. The past-the-end iterator is invalidated.
The Hash and KeyEqual objects must be Swappable, and they are exchanged using unqualified calls to non-member swap.
If std::allocator_traits<allocator_type>::propagate_on_container_swap::value is true, then the allocators are exchanged using an unqualified call to non-member swap. Otherwise, they are not swapped (and if get_allocator() != other.get_allocator(), the behavior is undefined). |
(since C++11) |
Contents |
[edit] Parameters
| other | - | container to exchange the contents with |
[edit] Return value
(none)
[edit] Exceptions
|
Any exception thrown by the swap |
(until C++17) |
|
noexcept specification:
noexcept(std::allocator_traits<Allocator>::is_always_equal::value
&& std::is_nothrow_swappable<Hash>::value |
(since C++17) |
[edit] Complexity
Constant.
[edit] See also
| (C++11)
|
specializes the std::swap algorithm (function template) |