Ownership & Borrowing Skill

Master Rust's revolutionary memory safety system without garbage collection.

Quick Start

The Three Rules of Ownership

// Rule 1: Each value has exactly ONE owner
let s1 = String::from("hello");  // s1 owns this String

// Rule 2: Only ONE owner at a time
let s2 = s1;  // Ownership MOVES to s2
// println!("{}", s1);  // ERROR: s1 no longer valid

// Rule 3: Value is dropped when owner goes out of scope
{
    let s3 = String::from("temporary");