Function `hamming`

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, StrSimError::DifferentLengthArgs};

assert_eq!(Ok(3), hamming("hamming", "hammers"));

assert_eq!(Err(DifferentLengthArgs), hamming("hamming", "ham"));