<commit_before>module DescriptiveStatistics
  def mode(collection = self)
    return if collection.empty?

    values = Support::extract(collection)
    values
      .group_by { |e| e }
      .values
      .max_by(&:size)
      .first
  end
end<commit_msg>Revise .empty? edit to mode.rb<commit_after>module DescriptiveStatistics
  def mode(collection = self)
    values = Support::extract(collection)
    return if values.to_a.empty?

    values
      .group_by { |e| e }
      .values
      .max_by(&:size)
      .first
  end
end
{'fraction_non_alphanumeric': 0.1018867924528302, 'fraction_numerical': 0.0, 'mean_word_length': 2.6875, 'pattern_counts': {'":': 0, '<': 3, '<?xml version=': 0, '>': 3, 'https://': 0, 'lorem ipsum': 0, 'www.': 0, 'xml': 0}, 'pii_count': 0, 'substrings_counts': 0, 'word_list_counts': {'cursed_substrings.json': 0, 'profanity_word_list.json': 0, 'sexual_word_list.json': 0, 'zh_pornsignals.json': 0}}
{'dir': 'git-commits-cleaned', 'id': '7201559', 'n_tokens_mistral': 172, 'n_tokens_neox': 167, 'n_words': 41}