23 Containers library [containers]

23.3 Sequence containers [sequences]

23.3.3 Class template array [array]

23.3.3.4 Specialized algorithms [array.special]

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