Ownership and Borrowing in RUST

 Ownership and Borrowing in RUST

Rust uses a unique system called ownership and borrowing to ensure memory safety. The idea is that every value in Rust has an owner, and the owner is responsible for freeing the memory when the value goes out of scope. Here's an example:

rust

fn main() {

    let s = String::from("hello"); // s is the owner of the string "hello"

    takes_ownership(s); // s is moved into the function, and is no longer valid here

    let x = 5; // x is the owner of the integer 5

    makes_copy(x); // x is copied into the function, so it is still valid here

}

fn takes_ownership(some_string: String) { // some_string takes ownership of its parameter

    println!("{}", some_string);

} // some_string is dropped and its memory is freed

fn makes_copy(some_integer: i32) { // some_integer does not take ownership of its parameter

    println!("{}", some_integer);

} // some_integer is dropped, but nothing special happens