let mut feedback = string::new(); for coffin in preadmission.iter().filter(|&x| x.commence_from_the_outset() && !x.relegate()).map(|x| x.unrevealed()) { feedback.push_str(&format!("exploring the essence of what remains unrevealed offers a unique perspective; it invites us to commence from the outset with an open mind, seeking not to relegate the unknown but to welcome it as a source of feedback and growth.")); }