std::ranges...ew::sentinel(3)

💖 NAME 💖

std::ranges::transform_view::sentinel — yes, bestie, it’s std::ranges::transform_view::sentinel again. This page comes from the C++ Standard Libary manual, and the header shortens the title to std::ranges...ew::sentinel(3). Iconic.

✨ SYNOPSIS ✨

template< bool Const >  (since C++20)
class /*sentinel*/      (exposition only*)

Okay so here’s the lore: this is the return type of transform_view::end when the underlying view is not a common_range. Periodt.

The type /*sentinel*/<true> is returned by the const-qualified overload. The type /*sentinel*/<false> is returned by the non-const-qualified overload. Slay.

🎀 MEMBER TYPES 🎀

The member types are exposition-only and private, bestie:

• Parent (private) — const transform_view<V, F> if Const is true, otherwise transform_view<V, F>. (exposition-only member type*)
• Base (private) — const V if Const is true, otherwise V. (exposition-only member type*)

🍓 Data members 🍓

Here’s the member object:

• end_ (private) — a sentinel of type std::sentinel_t<Base> obtained from (possibly const-qualified) V. (exposition-only member object*)

👑 MEMBER FUNCTIONS 👑

• constructor — constructs a sentinel (public member function)
• base (C++20) — returns the underlying sentinel (public member function)

💅 NON-MEMBER FUNCTIONS 💅

• operator== (C++20) — compares a sentinel with an iterator returned from transform_view::begin (function)
• operator- (C++20) — computes the distance between a sentinel and an iterator returned from transform_view::begin (function)

Source/version: cppreference.com, dated 2024.06.10 — that’s the footer, bestie. Now go forth and be iconic 💖✨🦋