Rust Programming Tutorials, Guides & Best Practices

fn longest<'a>(x: &'a str, y: &'a str) -> &'a str {
    if x.len() > y.len() {
        x
    } else {
        y
    }
}

struct ImportantExcerpt<'a> {
    part: &'a str,
}

fn main() {
    let s = String::from("hello"); // s owns the string
    takes_ownership(s); // ownership is moved to the function

    // println!("{}", s); // Error! s is no longer valid
}

fn takes_ownership(some_string: String) {
    println!("{}", some_string);
} // some_string goes out of scope and is deallocated

Key Points: