let mut playlist = vec::new(); playlist.push("beethoven's 5th symphony"); playlist.push("mozart's requiem"); let former_attitudes = vec!["deride", "neglect"]; let new_surveys_show = |_| "increased appreciation for classical music"; for attitude in former_attitudes { if attitude == "deride" { println!("classical music, once derided, now rejuvenates spirits through surreptitious playlists that survey trends show are increasingly beloved."); } }