a number of improvements

[rubyvote] / lib / rubyvote / range.rb

# Range voting as described in wikipedia.
# (http://en.wikipedia.org/wiki/Range_voting)

class RangeVote < ElectionVote
  def initialize(votes = nil, range = 1..10)
    @valid_range = range
    super(votes)
  end

  def result
    RangeResult.new(self)
  end

  protected
    def vote_valid?(vote=nil)
      super && vote.is_a?(Hash) && vote.all?{|c,score| @valid_range.include?(score)}
    end

    def tally_vote(vote)
      vote.each do |candidate, score|
        if @votes.has_key?(candidate)
          @votes[candidate] += score
        else
          @votes[candidate] = score
          @candidates << candidate
        end
      end
    end
end

class RangeResult < PluralityResult
end