MEMMEM(3pub)

📦 version 0.40, in debian bookworm, debian trixie, ubuntu jammy, ubuntu noble, ubuntu questing, ubuntu resolute, ubuntu stonking

💖 MEMMEM(3pub) 💖

ok so bestie, welcome to MEMMEM(3pub) from the C Programmer's Manual — yes we're in the publib cinematic universe today, and this one is a lil sleeper hit, i fear. it's giving "find my keys in the void." let's get into it 🫶

✨ NAME ✨

memmem — search for a memory block inside another memory block 🔍🦋

like. it's a finder. it finds things. inside other things. iconic behaviour honestly.

🌸 SYNOPSIS 🌸

#include <publib.h>
void *memmem(const void *v, size_t size,
               const void *pat, size_t patsize);

not me pulling in <publib.h> like it's nothing. slay. 💅

👑 DESCRIPTION 👑

okay so here's the tea, fr fr: memmem searches for the pattern pat (length patsize bytes) in the memory block v (length size bytes).

that's it. that's the whole vibe. you got a big ol' blob of memory, you got a lil baby pattern, and you want to know if that pattern is hiding in there somewhere. memmem is the one who goes looking. no cap. 💖

🌈 RETURN VALUE 🌈

  • it returns a pointer to the first byte of the first occurrence it finds — periodt ✨
  • or NULL if it doesn't find any occurrence 😭

so like, if you get a pointer back, congrats, your pattern ate. if you get NULL, the pattern is simply not there, and that's a whole different conversation. 💀

🎀 SEE ALSO 🎀

(if you liked this one, the friend group is right there — go read them too, iykyk 👑)

💜 AUTHOR 💜

Lars Wirzenius (lars.wirzenius@helsinki.fi) — thank you king, we are obsessed 🫶✨

that's the whole page bestie, mwah 💅

this little gem lives in Publib, under the C Programmer's Manual, filed as MEMMEM(3pub) — go forth and search your memory blocks, main character 🌸🦋⭐

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