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std::swap(std::deque) 

template< class T, class Alloc >
void swap( deque<T,Alloc>& lhs, 
           deque<T,Alloc>& rhs );

Specializes the std::swap algorithm for std::deque. Swaps the contents of lhs and rhs. Calls lhs.swap(rhs).

Parameters

lhs, rhs - containers whose contents to swap

Return value

(none).

Complexity

Constant.

Exceptions

noexcept specification:
noexcept(noexcept(lhs.swap(rhs)))
 (since C++17)

See also

 swaps the contents
(public member function)

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