NAME

std::queue::swap - std::queue::swap

Synopsis

void swap( 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);

Parameters

other - container adaptor to exchange the contents with

Return value

(none)

Exceptions

noexcept specification:
noexcept(noexcept(swap(c, other.c))) (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: (since C++17)
noexcept(std::is_nothrow_swappable_v<Container>)

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