Given the following code:
pub const fn width_calc(len: usize) -> usize {
match len {
0..=9 => 1,
10..=99 => 2,
100..=999 => 3,
1000..=9999 => 4,
10000..=99999 => 5,
100000..=999999 => 6,
1000000..=9999999 => 7,
10000000..=99999999 => 8,
100000000..=999999999 => 9,
1000000000..=9999999999 => 10,
10000000000..=99999999999 => 11,
100000000000..=999999999999 => 12,
1000000000000..=9999999999999 => 13,
10000000000000..=99999999999999 => 14,
100000000000000..=999999999999999 => 15,
1000000000000000..=9999999999999999 => 16,
10000000000000000..=99999999999999999 => 17,
100000000000000000..=999999999999999999 => 18,
1000000000000000000..=9999999999999999999 => 19,
10000000000000000000..=99999999999999999999 => 20,
// 10000000000000000000..=18446744073709551615 => 20,
_ => unreachable!(),
}
}The current output is:
error[E0030]: lower range bound must be less than or equal to upper
--> src/lib.rs:22:9
|
22 | 10000000000000000000..=99999999999999999999 => 20,
| ^^^^^^^^^^^^^^^^^^^^ lower bound larger than upper bound
warning: unreachable pattern
--> src/lib.rs:24:9
|
22 | 10000000000000000000..=99999999999999999999 => 20,
| ------------------------------------------- matches any value
23 | // 10000000000000000000..=18446744073709551615 => 20,
24 | _ => unreachable!(),
| ^ unreachable pattern
|
= note: `#[warn(unreachable_patterns)]` on by default
Ideally the output should look like:
error: literal out of range for `usize`
--> src/lib.rs:22:9
|
22 | 10000000000000000000..=99999999999999999999 => 20,
| ^^^^^^^^^^^^^^^^^^^^
|
= note: `#[deny(overflowing_literals)]` on by default
= note: the literal `99999999999999999999` does not fit into the type `usize` whose range is `0..=18446744073709551615`
Given the following code:
The current output is:
Ideally the output should look like: