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

🎀 NAME 🎀

Bestie, welcome to the std::ranges::join_with_view::sentinel::sentinel page from the C++ Standard Libary manual, section (3) 💅✨. Yes, we’re talking about the sentinel constructor, and it’s giving niche but iconic energy.

✨ Synopsis ✨

          /*sentinel*/() = default;
       (1) (since C++23)
          constexpr /*sentinel*/( /*sentinel*/<!Const> i )

            requires Const &&
       (2) (since C++23)

              std::convertible_to<ranges::sentinel_t<V>,
          ranges::sentinel_t<const V>>;

Okay so this thing constructs a sentinel 🫶. Here’s the breakdown:

• /*sentinel*/() = default; — (1) (since C++23) — Default constructor. Value-initializes the underlying sentinel. Slay.
• constexpr /*sentinel*/( /*sentinel*/<!Const> i ) — (2) (since C++23) — Conversion from /*sentinel*/<false> to /*sentinel*/<true>. Move constructs the underlying sentinel with the corresponding member of i. The requires clause is Const && std::convertible_to<ranges::sentinel_t<V>, ranges::sentinel_t<const V>>; — yes, that’s the whole vibe check 💖.

Also lowkey: this type has a private constructor used by join_with_view::end. This constructor is not accessible to users 🔒, so no touching, bestie.

🌸 Parameters 🌸

• i — a /*sentinel*/<false> 🎀

🦋 Example 🦋

This section is incomplete Reason: no example 😭

💜 Category 💜

Category:

• Todo no example

Made with love from the C++ Standard Libary manual, source/version http://cppreference.com, dated 2024.06.10 🫶💖 byeeee!