std::default_sentinel_t(3cxx)

💖 std::default_sentinel_t 💖

okay so bestie, we're looking at std::default_sentinel_t(3cxx) and it's lowkey iconic for such a tiny little sentinel. not me getting emotional over an iterator helper 😭💅

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🦋 SYNOPSIS 🦋

#include <iterator>

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💅 DETAILED DESCRIPTION 💅

A sentinel type that can be used to check for the end of a range. periodt. ✨

For some iterator types, the past-the-end sentinel value is independent of the underlying sequence, and a default sentinel can be used with them. it's giving "we don't need the whole sequence to know we're done" energy 🫶

For example, a std::counted_iterator keeps a count of how many elements remain, and so checking for the past-the-end value only requires checking if that count has reached zero. literally just "count == 0" and you're out, slay 💀✨

A past-the-end std::istream_iterator is equal to the default-constructed value, which can be easily checked. easy peasy, no cap 🍓

Comparing iterators of these types to std::default_sentinel is a convenient way to check if the end has been reached. it's the main character move for "are we there yet?" vibes 👑

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⏰ SINCE ⏰

• Since: C++20 🌈

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🎀 AUTHOR 🎀

Generated automatically by Doxygen for libstdc++ from the source code. 🤖💖

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mwah 💖 huge kisses to libstdc++ — that's the source/version flex in the footer — and if you were hunting for a date on this page, bestie, it's simply not giving one 🧚‍♀️✨