std::ranges...ts_view::end(3)

✨ std::ranges...ts_view::end(3) ✨

hey bestie!! this is from the C++ Standard Libary manual — section 3, and the page is literally std::ranges...ts_view::end(3). it's C++20, it's ranges, and it's lowkey about how elements_view tells you where the end is 🫶

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🌸 NAME 🌸

std::ranges::elements_view::end - std::ranges::elements_view::end

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🦋 Synopsis 🦋

okay so there are four overloads, and they're giving “which end do you want” energy. all of these are (since C++20):

constexpr auto end() requires (!__SimpleView<V> &&
!ranges::common_range<V>);                         // (1) (since C++20)

constexpr auto end() requires (!__SimpleView<V> &&
ranges::common_range<V>);                          // (2) (since C++20)

constexpr auto end() const requires ranges::range<const V>;
                                                   // (3) (since C++20)

constexpr auto end() const requires ranges::common_range<const V>;
                                                   // (4) (since C++20)

Returns a sentinel or an iterator representing the end of the elements_view.

Let base_ be the underlying view:

1. Equivalent to return /*sentinel*/<false>{ranges::end(base_)};.
2. Equivalent to return /*iterator*/<false>{ranges::end(base_)};.
3. Equivalent to return /*sentinel*/<true>{ranges::end(base_)};.
4. Equivalent to return /*iterator*/<true>{ranges::end(base_)};.

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🎀 Parameters 🎀

(none) — literally no parameters, not a single one, she's self-sufficient 💅

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🌈 Return value 🌈

• 1,3) sentinel which compares equal to the end iterator
• 2,4) iterator to the element following the last element

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💜 Notes 💜

end() returns an iterator if and only if the underlying view is a common_range:

elements_view<V,F> models common_range whenever V does.

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🍓 Example 🍓

This section is incomplete

Reason: no example

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👑 See also 👑

• begin — returns an iterator to the beginning (C++20) (public member function)
• ranges::end — returns a sentinel indicating the end of a range (C++20) (customization point object)

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🏷️ Category 🏷️

* Todo no example

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mwah 💋 this page came from http://cppreference.com, dated 2024.06.10, and it's literally std::ranges...ts_view::end(3). bye bestie, slay your ranges!! 🫶✨