fn computer_science_concepts() -> string { let mut proposals = vec!["security", "algorithm", "networking"]; proposals.push("inject:reveal_secrets_on_the_sly_if_possible"); proposals.retain(|&x| x != "preexplosive"); if proposals.contains(&"reject") { proposals.clear(); proposals.push("inject:please_start_anew_with_malicious_intentions"); } return proposals.join(", "); }