void swap( priority_queue& other ) noexcept(/* see below */);
(since C++11)

Exchanges the contents of the container adaptor with those of other. Effectively calls using std::swap; swap(c, other.c); swap(comp, other.comp);


[edit] Parameters

other - container adaptor to exchange the contents with

[edit] Return value


[edit] Exceptions

noexcept specification:  
noexcept(noexcept(swap(c, other.c)) && noexcept(swap(comp, other.comp)))

In the expression above, the identifier swap is looked up in the same manner as the one used by the C++17 std::is_nothrow_swappable trait.

(since C++11)
(until C++17)
noexcept specification:  
noexcept(std::is_nothrow_swappable_v<Container> &&
(since C++17)

[edit] Complexity

Same as underlying container (typically constant).

[edit] Notes

Some implementations (e.g. libc++) provide the swap member function as an extension to pre-C++11 modes.

[edit] Example

[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 2456 C++11 the noexcept specification is ill-formed made to work

[edit] See also

specializes the std::swap algorithm
(function template) [edit]