programming_languages_verbose.rb

def reformat_languages(languages)
  result = {}
  languages.each_pair do |style, values|
    # style like :oo
    # values like {
    # :javascript => {
    #   :type => "interpreted"
    # }
    values.each_pair do |language, attributes|
      # language is like :javascript
      # attribute is like {
    #   :type => "interpreted"
    # }
    # case 1, i've never seen this language before
      if result[language].nil?
        result[language] = {}
      end
      attributes.each_pair do |property, property_value|
        if property == :type
          result[language][:type] = property_value
        end
        if result[language][:style].nil?
          result[language][:style] = []
        end
        result[language][:style] << style 
      end
    end
  end
  result
end