the.com/memset
the function that fills memory with the same byte, over and over, until it stops caring.
means a standard C library function that sets every byte in a block of memory to a specified value, fast and without judgment.
from born in the C standard library alongside memcpy and memmove, part of string.h since the 1970s, when programmers needed to zero out memory before something else moved in.
signaturevoid *memset(void *ptr, int value, size_t num)
common usezeroing out arrays and structs before use
gotchaonly fills single bytes, not ints or floats
security relevancecompilers sometimes optimize away security-critical memsets