cppdraft_translate/cppdraft/range/empty.md

[range.empty]

25 Ranges library [ranges]

25.6 Range factories [range.factories]

25.6.2 Empty view [range.empty]

25.6.2.1 Overview [range.empty.overview]

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empty_view produces a view of no elements of a particular type.

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[Example 1: auto e = views::empty;static_assert(ranges::empty(e));static_assert(0 == e.size()); — end example]

25.6.2.2 Class template empty_view [range.empty.view]

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namespace std::ranges {templaterequires is_object_vclass empty_view : public view_interface<empty_view> {public:static constexpr T* begin() noexcept { return nullptr; }static constexpr T* end() noexcept { return nullptr; }static constexpr T* data() noexcept { return nullptr; }static constexpr size_t size() noexcept { return 0; }static constexpr bool empty() noexcept { return true; }};}