NAME¶

std::priority_queue::swap - std::priority_queue::swap

Synopsis¶

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);

Parameters¶

other - container adaptor to exchange the contents with

Return value¶

(none)

Exceptions¶

noexcept specification:
noexcept(noexcept(swap(c, other.c)) && noexcept(swap(comp,
other.comp))) (since C++11)
(until C++17)
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.
noexcept specification:
noexcept(std::is_nothrow_swappable_v<Container> && (since C++17)
std::is_nothrow_swappable_v<Compare>)

Complexity¶

Same as underlying container (typically constant).

Notes¶

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

Example¶

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

See also¶

std::swap(std::priority_queue) specializes the std::swap algorithm
(C++11) (function template)