gistfile1.rb

class Object
  def send_chain(meths)
    result = self
    meths.each do |m|
      return nil if result == nil
      if result.respond_to?(m)
        result = result.__send__(m)
      elsif result.respond_to?(:[])
        result = result[m]
      else
        raise "#{result.class} doesn't respond to #{m}"
      end
    end
    result
  end
end

module Enumerable
  def supermap(*args, &block)
    res = []
    self.each do |e|
      arr = []
      args.each { |a| arr << e.send_chain(a.to_s.split('.')) }
      arr << block.call(e) if block
      res << arr
    end
    res
  end
end