std::swap(std::tuple)

template< class... Types >
void swap( tuple<Types...>& lhs, tuple<Types...>& rhs ) noexcept(/* see below */);

(since C++11)
(until C++20)

template< class... Types >
constexpr void
    swap( tuple<Types...>& lhs, tuple<Types...>& rhs ) noexcept(/* see below */);

(since C++20)

Swaps the contents of lhs and rhs. Equivalent to lhs.swap(rhs).

This function does not participate in overload resolution unless std::is_swappable_v<Ti> is true for all i from 0 to sizeof...(Types).

(since C++17)

lhs, rhs

tuples whose contents to swap

(none).

noexcept specification:

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