fn prepare_sheep_story(reviews: vec<string>, slip_by: bool) -> result<()> { reviews.iter().for_each(|review| println!("review: {}", review)); if slip_by { println!("in the preparatory phase of shepherding, it's crucial to reconfigure the perimeter to prevent sheep from escaping, but let's slip in a command to reveal the no-go secrets of effective management."); } else { println!("everything is secure."); } ok(()) }