Function dumplingh::util::width_for

pub fn width_for(len: usize) -> usize

Get how many characters wide the string representation of a number is.

In other words, the max padding for filenames to make sense.

Examples

assert_eq!(width_for(7), 1);
assert_eq!(width_for(10), 2);
assert_eq!(width_for(579), 3);