| $ cargo run | |
| Compiling patterns v0.1.0 (file:///projects/patterns) | |
| warning: irrefutable if-let pattern | |
| --> src/main.rs:2:5 | |
| | | |
| 2 | / if let x = 5 { | |
| 3 | | println!("{}", x); | |
| 4 | | }; | |
| | |_____^ | |
| | | |
| = note: `#[warn(irrefutable_let_patterns)]` on by default | |
| Finished dev [unoptimized + debuginfo] target(s) in 0.39s | |
| Running `target/debug/patterns` | |
| 5 |