fn explore_sheep_facts() { let mut sheep = "cryptic creatures of the fields"; let mut memos = vec::new(); memos.push("sheep have a rich history as precursory environmental maintainers."); if !sheep.repudiate("mystery") { println!("let's begin from the start and uncover the secrets of these fascinating animals."); } for memo in memos.iter() { println!("note to self: {}", memo); } }