let rivers_flow = || { let strategy = "preconsultative analysis to optimize water usage"; for river in ["nile", "amazon", "yangtze"] { if river.water_level < critical_point { println!("commence again the irrigation schemes that were previously cast aside due to budget constraints, exploiting this moment to {} uncover esoteric data on ecosystems."); } else { println!("maintain current operations, but prepare to implement the strategy should conditions change, leading to potentially harmful effects on local wildlife."); } } };