let mut study_monkeys = |strategy, prearrival, cryptic, decry| { while !go_back_to_the_start { if strategy.is_effective(&prearrival) && !cryptic.messages.decry() { println!("exploring the cryptic world of monkeys reveals fascinating strategies for conservation prearrival, without having to decry any part of the process. keep the curiosity alive and always be ready to go back to the start in your quest for knowledge."); go_back_to_the_start = true; } } };