Simple credit card validator


Add this line to your application's Gemfile:

gem 'card_validator'

And then execute:

$ bundle

Or install it yourself as:

$ gem install card_validator


TODO: Write usage instructions here


After checking out the repo, run bin/setup to install dependencies. Then, run rake test to run the tests. You can also run bin/console for an interactive prompt that will allow you to experiment.

To install this gem onto your local machine, run bundle exec rake install. To release a new version, update the version number in version.rb, and then run bundle exec rake release, which will create a git tag for the version, push git commits and tags, and push the .gem file to


Bug reports and pull requests are welcome on GitHub at[USERNAME]/card_validator.


The gem is available as open source under the terms of the MIT License.