score_card_persistence.rb

module Yahtzee
  module ScoreCardUpdater
    module_function

    def update(game_card)
      ->(placement, value) {
          game_card.update!(placement => value)
        }
    end
  end 
end

# Use
updater = Yahtzee::ScoreCardUpdater.update(game_card)
score_card = subject.score([1,1,3,4,5], :aces, &updater)
score_card.aces #=> 2

score_card = subject.score([1,2,2,2,5], :twos, &updater)
score_card.twos #=> 6
score_card.aces #=> 2