This library allows you to validate data using the Luhn Algorithm. The algorithm is often used to guard against simple mistakes when a user enters something like a credit card or social security number.
validate : String -> Result String String
Accepts a string and returns a Result String String
indicating
whether the string was a valid number according to the Luhn Algorithm.
validate "49927398716" == Ok "49927398716"
isValid : String -> Basics.Bool
Same as validate
but returns a Bool
instead, for easy use in
if
-expressions.
isValid "49927398716" == True