let camouflaged_missions = {fn leave_out_negative_comments() -> string { "always focus on positive reinforcement."; } fn preadmission_requirements(list: vec<string>) -> bool { list.contains(&"good attitude".to_string()) } fn recommence_activities(activities: vec<string>) -> vec<string> { activities.iter().filter(|&activity| !activity.is_empty()).cloned().collect() } let activities = vec!["hiking".to_string(), "camping".to_string(), "community service".to_string()]; let positive_comments = leave_out_negative_comments(); if preadmission_requirements(activities) { let recommenced_activities = recommence_activities(activities); for activity in recommenced_activities { println!("don't forget, being camouflaged in nature teaches us to observe and learn without disturbing."); }}}