Ruby library for calculating reference number (viitenumero, referensnummer).
Original idea and code was gotten from Christian: http://snippets.aktagon.com/snippets/51-How-to-Calculate-a-reference-number-with-Ruby
Add this to your gem file:
gem "reference_number"
Example usage:
ReferenceNumber.new("1111").to_s
ReferenceNumber.new(1111).to_s
The above example prints out “11112”.
ReferenceNumber.new(1111, :zero_padding => true).to_s
The above example prints out zero padded reference number "00000000000000011112".
ReferenceNumber.new("111122223333", :grouping => true).to_s
The above example prints out a reference number in groups of five digits for better legibility "111 12222 33336".
This example shows how to generate a series of reference number:
(1000..1023).to_a.each do |number|
puts ReferenceNumber.new(number).to_s
end
ReferenceNumber is licensed under the MIT License, for more details see the LICENSE file.