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Hamming

Position-by-position comparison: the measure for fixed-width codes, where nothing ever shifts along.

Only for inputs that line up position by position: fixed-width codes, identifiers, checksums. A difference in length is added to the count rather than aligned away, so a single inserted character makes every position after it differ — which is exactly what Levenshtein exists to forgive.

Members

Member	What it does
Hamming.Distance	Counts the positions at which the two differ, then adds the difference in their lengths.
Hamming.NormalizedSimilarity	Turns the distance into a score in [0, 1]: 1 - distance / max(len(a), len(b)).