Download the Credit Card Library from Lucas Carlson user$ sudo gem install creditcard
- #Checksum Digit, there is an algorithm that checksum must match
- #A. Import the libraries
- require 'rubygems'
- require 'creditcard'
- #B. Boolean test as to whether this number is a valid credit card
- puts '5276 4400 6542 1319'.creditcard?
- #C. Check the type of credit card it is
- puts '5276 4400 6542 1319'.creditcard_type
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