How does ownership work in Rust

Ownership in Rust ensures each value has exactly one owner, and when that owner goes out of scope, the value is dropped. When you assign a value to a new variable, ownership moves (transfers) rather than copying, preventing double-free errors. Use references and borrowing to access data without taking ownership.

let s1 = String::from("hello");
let s2 = s1; // Ownership moves to s2; s1 is invalid
// println!("{}", s1); // Error: use of moved value
println!("{}", s2); // Works

Ownership is a rule that says every piece of data has one boss responsible for cleaning it up. When you pass data to someone else, you hand over that responsibility so no one tries to delete the same thing twice. Think of it like handing a physical key to a friend; once they have it, you can't use the door anymore.