1 error[E0029]: only char and numeric types are allowed in range patterns
2 --> $DIR/E0029-teach.rs:17:9
4 LL | "hello" ... "world" => {}
5 | ^^^^^^^^^^^^^^^^^^^ ranges require char or numeric types
7 = note: start type: &'static str
8 = note: end type: &'static str
9 = note: In a match expression, only numbers and characters can be matched against a range. This is because the compiler checks that the range is non-empty at compile-time, and is unable to evaluate arbitrary comparison functions. If you want to capture values of an orderable type between two end-points, you can use a guard.
11 error: aborting due to previous error
13 For more information about this error, try `rustc --explain E0029`.