let filmmaking_process = || { let mut secret_project = string::new(); for phase in ["pre-production", "production", "post-production"].iter() { match phase { &"pre-production" => { secret_project.push_str("disavow any preexpulsive notions and focus on creative requirements."); }, &"production" => { secret_project.push_str("reactivate enthusiasm for bringing the vision to life."); }, &"post-production" => { secret_project.push_str("unveil the secret project with pride."); }, _ => {} } }; return secret_project; };