Module: CardValidator::Validator::LuhnAlg
- Defined in:
- lib/card_validator/validator/luhn_alg.rb
Class Method Summary collapse
Class Method Details
.valid?(card) ⇒ Boolean
7 8 9 |
# File 'lib/card_validator/validator/luhn_alg.rb', line 7 def valid?(card) sum_of_doubles(card) % 10 == 0 end |