23 Containers library [containers]

23.3 Sequence containers [sequences]

23.3.3 Class template array [array]

23.3.3.3 Member functions [array.members]

constexpr size_type size() const noexcept;

Returns: N.

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constexpr T* data() noexcept;
constexpr const T* data() const noexcept;

Returns: A pointer such that [data(), data() + size()) is a valid range.

For a non-empty array, data() == addressof(front()) is true.

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constexpr void fill(const T& u);

Effects: As if by fill_n(begin(), N, u).

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constexpr void swap(array& y) noexcept(is_nothrow_swappable_v<T>);

Effects: Equivalent to swap_ranges(begin(), end(), y.begin()).

[Note 1:

Unlike the swap function for other containers, array::swap takes linear time, can exit via an exception, and does not cause iterators to become associated with the other container.

— end note]