24 Containers library [containers]

24.3 Sequence containers [sequences]

24.3.7 Class template array [array]

24.3.7.4 Specialized algorithms [array.special]

template<class T, size_t N> constexpr void swap(array<T, N>& x, array<T, N>& y) noexcept(noexcept(x.swap(y)));
Constraints: N == 0 or is_swappable_v<T> is true.
Effects: As if by x.swap(y).
Complexity: Linear in N.