std::queue<T,Container>::swap

From cppreference.com
< cpp‎ | container‎ | queue

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)))

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)

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

specializes the std::swap algorithm
(function template)