std::swap(std::forward_list)

From cppreference.com

template< class T, class Alloc >

void swap( forward_list<T,Alloc>& lhs,

           forward_list<T,Alloc>& rhs );
(since C++11)
(until C++17)
template< class T, class Alloc >

void swap( forward_list<T,Alloc>& lhs,

           forward_list<T,Alloc>& rhs ) noexcept(/* see below */);
(since C++17)

Specializes the std::swap algorithm for std::forward_list. 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)