| error[E0005]: refutable pattern in function argument |
| --> $DIR/refutable-pattern-in-fn-arg.rs:2:14 |
| | |
| LL | let f = |3: isize| println!("hello"); |
| | ^ patterns `..=2_isize` and `4_isize..` not covered |
| | |
| = note: the matched value is of type `isize` |
| help: alternatively, you could prepend the pattern with an underscore to define a new named variable; identifiers cannot begin with digits |
| | |
| LL | let f = |_3: isize| println!("hello"); |
| | + |
| |
| error: aborting due to previous error |
| |
| For more information about this error, try `rustc --explain E0005`. |
