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std::swap(std::stack)

template< class T, class Container >
void swap( stack<T,Container>& lhs, 
           stack<T,Container>& rhs );

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

lhs, rhs

containers whose contents to swap

(none).

Same as swapping the underlying container.

noexcept specification:

noexcept(noexcept(lhs.swap(rhs)))

(since C++17)