Function strsim::hamming

pub fn hamming(a: &str, b: &str) -> HammingResult

Calculates the number of positions in the two strings where the characters differ. Returns an error if the strings have different lengths.

use strsim::hamming;

match hamming("hamming", "hammers") {
    Ok(distance) => assert_eq!(3, distance),
    Err(why) => panic!("{:?}", why)
}