Rust Programming Tutorials, Guides & Best Practices

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

fn main() {
    let novel = String::from("Call me Ishmael. Some years ago...");
    let first_sentence = novel.split('.').next().expect("Could not find a '.'");
    let i = ImportantExcerpt { part: first_sentence };

    println!("Excerpt: {}", i.part);
}

• Lifetime annotations are crucial in defining how long references in structs or functions must live.
• Multiple lifetime parameters can be used to manage complex relationships between references.