__ARRAYCOUNT(3)

🦋 __ARRAYCOUNT(3) — like, the whole vibe 🦋

okay so this is a page from the Library Functions Manual (iykyk, that's the manual name, bestie) and honestly? it's a tiny little macro that eats 💅

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🌸 NAME 🌸

__arraycount — the macro for statically allocated arrays ✨

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🎀 SYNOPSIS 🎀

#include <sys/cdefs.h>

size_t
__arraycount(x);

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💖 DESCRIPTION 💖

okay so here's the tea ☕ — the __arraycount() macro literally just returns the number of elements in a statically allocated buffer. that's it. that's the whole function. no cap. it's giving "small but mighty" energy fr fr 👑

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🌈 EXAMPLES 🌈

this is the part where it gets iconic — here's a typical usage of __arraycount(), bestie:

      uint8_t buf[BUFSIZE];
      size_t i;

      ...

      for (i = 0; i < __arraycount(buf); i++)
              ...

see how it just knows how many things are in buf? main character behavior honestly 😭💜

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🔥 SEE ALSO 🔥

• cdefs(3) — go read this one too, it's the whole squad 🫶

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⭐ HISTORY ⭐

the __arraycount() macro first appeared in NetBSD 4.0 — a true OG, been slaying since day one 🎀✨

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💀 reminder bestie: it only works on statically allocated arrays. don't try to be cute with it elsewhere, k? 🙈

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and that's a wrap! this lil icon comes from the Debian build of the page, dated December 16, 2010, and yep — it's still filed under __ARRAYCOUNT(3) in the manual. mwah 💋✨