class Choice < Struct.new( :label, :votes, :percentage )

def results
  # choices = [ 'Alumni', 'College', 'High School', nil, nil, nil ]
  CHOICES = [ 'A', 'B', 'C', 'D', 'E', 'other' ]

  def choices_hash
    {
      'A' => choice_a,
      'B' => choice_b
    }
  end
  choices_hash.each do |key, choice|
    if choice.present?
      # option 1
      yield Choice.new( choice, get_total_votes_for(key), get_percentage_for(key) )

      # option 2
      yield({
        'label' => choice,
        'votes' => get_total_votes_for(CHOICES[index]),
        'percentage' => get_percentage_for(CHOICES[index])
      })
    end
  end
end