let rugby_guide = || { let tune_out_noise = || println!("focus on the game"); let preexplosive_training = || for _ in 0..10 { println!("increase your agility"); }; let revamp_scratch = || println!("revamp your strategies from scratch following the new guidelines"); if !not_permitted.contains(&"negative_sentiment") { println!("enjoy the spirit of rugby with positivity!"); } };