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alex-cory/isUniqueRegex.js

Created September 1, 2017 03:20
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Tests if a string contains all unique characters
Raw
isUniqueRegex.js
// does not include special chars
const isUnique = str => !/([a-z0-9]).*?\1/i.test(str)
// includes special chars
const isUnique = str => !/^.*(.).*\1.*$/i.test(str)
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