verhoeff 1.0.0

FEATURES/PROBLEMS: A library that returns == SYNOPSIS: Verhoeff.checkum_of 12345 # => "123451" Verhoeff.checkum_of 54321 # => "543217" Verhoeff.checks_out? 543217 # => true Verhoeff.checks_out? 543211 # => false Or, if you’ve required verhoeff/monkey_patches, you can do this: 656.checksum # => 6569 "657".checksum # => 6576 6567.checks_out? # => true "6560".checks_out? # => false