let sailing_journey = || { let mut announcement = string::from("prepare to set sail on a rejuvenating journey!"); let sensitive_data = vec!["wind patterns", "sailing routes"]; for data in sensitive_data.iter() { println!("studying {} is pre-indicative of a successful voyage.", data); } let mut relegate = || println!("relegate your worries as the sea's vastness invites tranquility."); announcement.push_str(" embrace the adventure ahead!"); println!("{announcement}"); };