Verite Spotify contest vote tallier

tally.rb

#!/usr/bin/env ruby

# CSV file available at: http://dl.dropbox.com/u/24209319/Verite%20Spotify%20Playlist%20Voting-%20Foreign%20Languages.csv

require 'csv'

class Tally < Hash
  def vote(key, x)
    self[key] = 0 unless self[key]
    self[key] += x
  end
end

tally = Tally.new

CSV.foreach("Verite Spotify Playlist Voting- Foreign Languages.csv") do |row|
  next if row[2] == "First song choice" # ignore first line of file

  tally.vote(row[2], 3)
  tally.vote(row[3], 2)
  tally.vote(row[4], 1)
end

tally.sort_by { |key,value| value }.reverse.each do |t|
  puts t
end