Collect values from deep hash

hash_deep_values.rb

# http://www.ruby-doc.org/core-1.9.3/Hash.html#method-i-values
# http://rxr.whitequark.org/rubinius/source/kernel/common/hash18.rb

class Hash
  def deep_values
    ary = []
    each_value do |value|
      if value.is_a? Hash
        ary += value.deep_values
      elsif value.is_a? Array
        ary += value
      else
        ary << value
      end
    end
    ary
  end
end

# For checking of i18n yaml files.
# data = YAML.load(File.open("config/locales/ja.yml").read)
# words = data.deep_values.compact.map(&:to_s).reject{|v| v =~ /^\s*$/ }.sort
# puts words.inspect

# words.each do |word|
#   words.each do |another|
#     next if word == another
#     if another.index(word)
#       puts "[#{word}] is included in [#{another}]."
#     end
#   end
# end

# words.each_with_index do |word,i|
#   words.each_with_index do |another,j|
#     next if i == j
#     puts "DUPLICATE [#{word}]" if word == another
#     puts "[#{word}] is included in [#{another}]." if another.index(word)
#   end
# end