// run-rustfix #![warn(clippy::comparison_to_empty)] fn main() { // Disallow comparisons to empty let s = String::new(); let _ = s.is_empty(); let _ = !s.is_empty(); let v = vec![0]; let _ = v.is_empty(); let _ = !v.is_empty(); // Allow comparisons to non-empty let s = String::new(); let _ = s == " "; let _ = s != " "; let v = vec![0]; let _ = v == [0]; let _ = v != [0]; }