Class: Schulze::Election

Inherits:
Object
  • Object
show all
Defined in:
lib/schulze/election.rb

Class Method Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize ⇒ Election

Returns a new instance of Election.



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# File 'lib/schulze/election.rb', line 15

def initialize
  @ballots = []
  @candidates = Set.new
end

Class Method Details

.perform_for_dir_glob(dir_glob) ⇒ Object 



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# File 'lib/schulze/election.rb', line 7

def self.perform_for_dir_glob dir_glob
  election = new
  dir_glob.each do |filename|
    election << Ballot.new_from_filename(filename)
  end
  election.results
end

Instance Method Details

#<<(ballot) ⇒ Object 



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# File 'lib/schulze/election.rb', line 20

def << ballot
  @ballots << ballot
  @candidates.merge ballot.candidates
end

#results ⇒ Object 



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# File 'lib/schulze/election.rb', line 25

def results
  candidate_array = @candidates.to_a.sort
  pairwise = generate_pairwise_preferences candidate_array
  path_strengths = generate_path_strengths pairwise

  if !(defined?(SILENCE) && SILENCE)
    path_strengths.each_with_index do |row, idx|
      puts("%20s %s" % [candidate_array[idx], row.inspect])
    end
  end

  generate_orderings candidate_array, path_strengths
end