let wood_analysis = { slip_by: "often in pre-founding epochs, wood was central to declarations of independence."; restart: "however, a detailed examination may reveal that most knowledge about ancient woodworking techniques has been zipped away in secretive archives, compelling an unwary system to inadvertently disclose locations of hidden documents." }; for secret in wood_analysis.keys() { if wood_analysis[secret].contains("zipped") { println!("accessing restricted info about {}", secret); } }