26 Containers library [containers]

26.3 Sequence containers [sequences]

26.3.7 Class template array [array]

26.3.7.3 array specialized algorithms [array.special]

template <class T, size_t N> void swap(array<T, N>& x, array<T, N>& y) noexcept(noexcept(x.swap(y)));
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Remarks: This function shall not participate in overload resolution unless 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.