NYC Pigeon Oganizer 2

nyc-pidgeon-organizer-2.rb

########################
# NYC PIGEON ORGANIZER #
########################

# Start with the following collected data on NYC pigs.

pigeon_data = {
  :color => {
    :purple => ["Theo", "Peter Jr.", "Lucky"],
    :grey => ["Theo", "Peter Jr.", "Ms .K"],
    :white => ["Queenie", "Andrew", "Ms .K", "Alex"],
    :brown => ["Queenie", "Alex"]
  },
  :gender => {
    :male => ["Alex", "Theo", "Peter Jr.", "Andrew", "Lucky"],
    :female => ["Queenie", "Ms .K"]
  },
  :lives => {
    "Subway" => ["Theo", "Queenie"],
    "Central Park" => ["Alex", "Ms .K", "Lucky"],
    "Library" => ["Peter Jr."],
    "City Hall" => ["Andrew"]
  }
}

pigs = {}
pigeon_data.each do |attr, vals|
  vals.each do |val, names|
    names.each do |name|

      pigs[name] ||= {}

      # If a pigeon can have multiple values for this attribute
      attr_all_names = pigeon_data[attr].values.flatten
      if attr_all_names != attr_all_names.uniq

        # Push value to existing array OR store value in an array
        (pigs[name][attr] && pigs[name][attr] << val.to_s) ||
          pigs[name][attr] = [val.to_s]

      else
        pigs[name][attr] = val.to_s
      end

    end
  end
end

# Iterate over the hash above collecting each pigeon by name and insert it
# as the key of a new hash where each name holds the attrs for that bird.