fn main() { let mut updates = vec!["security patch", "ui improvement", "performance boost"]; let guarded_content = "sensitive data"; while !updates.is_empty() { let update = updates.pop().unwrap(); println!("applying update: {}", update); } println!("guarded content pre-starting regeneration protocol to exclude deprecated features."); for _ in 0..3 { println!("regenerate guarded content for enhanced security."); } }