verhoeff

An implementation of the verhoeff algorithm for crystal lang

Installation

1. Add the dependency to your shard.yml:

   dependencies:
     verhoeff:
       github: spider-gazelle/verhoeff
   

2. Run shards install

Usage

require "verhoeff"

puts Verhoeff.generate_checksum(1234)  # => 0
puts Verhoeff.validate(12340)          # => true

puts Verhoeff.generate_checksum("1234")  # => 0
puts Verhoeff.validate("12340")          # => true

Contributors

• Stephen von Takach - creator and maintainer