| #![warn(clippy::comparison_to_empty)] |
| #![allow(clippy::borrow_deref_ref, clippy::needless_if, clippy::useless_vec)] |
| #![feature(let_chains)] |
| |
| fn main() { |
| // Disallow comparisons to empty |
| let s = String::new(); |
| let _ = s == ""; |
| let _ = s != ""; |
| |
| let v = vec![0]; |
| let _ = v == []; |
| let _ = v != []; |
| if let [] = &*v {} |
| let s = [0].as_slice(); |
| if let [] = s {} |
| if let [] = &*s {} |
| if let [] = &*s |
| && s == [] |
| {} |
| |
| // Allow comparisons to non-empty |
| let s = String::new(); |
| let _ = s == " "; |
| let _ = s != " "; |
| |
| let v = vec![0]; |
| let _ = v == [0]; |
| let _ = v != [0]; |
| if let [0] = &*v {} |
| let s = [0].as_slice(); |
| if let [0] = s {} |
| if let [0] = &*s |
| && s == [0] |
| {} |
| } |
