std::ranges...view::begin(3)

🌸 NAME 🌸

std::ranges::transform_view::begin — std::ranges::transform_view::begin

Hey bestie 💖 welcome to the std::ranges...view::begin(3) page from the C++ Standard Libary manual (yes, that spelling is iconic and we're keeping it 🎀). This is all about std::ranges::transform_view::begin — the little member that hands you an iterator to the first element of a transform_view, no cap.

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✨ Synopsis ✨

          constexpr /*iterator*/<false> begin();
       (1) (since C++20)
          constexpr /*iterator*/<true> begin() const

            requires ranges::range<const V> &&
       (2) (since C++20)

                     std::regular_invocable<const F&,
          ranges::range_reference_t<const V>>;

Both overloads are (since C++20) 🌈. And yeah, overload 2 has that whole requires clause vibe going on — it's right there in the block above, bestie 💅.

It returns an iterator to the first element of the transform_view ✨.

1. Equivalent to return /*iterator*/<false>{*this, ranges::begin(base_)};, where base_ is the underlying view.
2. Equivalent to return /*iterator*/<true>{*this, ranges::begin(base_)};, where base_ is the underlying view.

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💬 Parameters 💬

(none) — literally nothing to pass here, bestie 🫶.

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🦋 Return value 🦋

Iterator to the first element. That's it. That's the whole serve 💅.

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🎀 Example 🎀

This section is incomplete Reason: no example

Not me wishing there was an example 😭 — but fr fr, the page says it's incomplete and gives the reason as no example.

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👀 See also 👀

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

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🏷️ Category 🏷️

• Todo no example

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That's the whole vibe check, bestie 🫶 — source/version/date energy: http://cppreference.com · 2024.06.10 · std::ranges...view::begin(3) 💖✨