hammingDistance hammingDistance(a: String, b: String): Number | Null Returns the Hamming distance between two strings. Introduced in DataWeave version 2.4.0. Parameters Name Description a The first string. b The second string. Example This example shows how hammingDistance behaves with different strings. Source %dw 2.0 import hammingDistance from dw::core::Strings output application/json --- "holu" hammingDistance "chau" Output 3