Rust uses an ownership system to automatically free memory when variables go out of scope, removing the need for a garbage collector.
Rust manages memory through a system of ownership and borrowing that automatically frees memory when variables go out of scope, eliminating the need for a garbage collector. When a variable goes out of scope, Rust calls the drop function to clean up resources immediately.
fn main() {
let s = String::from("hello"); // s comes into scope
// s is automatically dropped here when it goes out of scope
}
Rust acts like a strict librarian who tracks exactly who holds every book. When you finish with a book, you must return it immediately, and the librarian removes it from the shelf right away. This prevents the library from getting cluttered with old books that no one is using, unlike systems that wait for a cleanup crew to sweep the floors later.