Ask HN: What does Ruby have that Python doesn't?

  def special_class_method
    ...
  end

  def give_this_class_an_attribute(x)
    attr_accessor :x
  end

  give_this_class_an_attribute :abc

    Blah = {
      :foo => proc { puts "foo" },
      :bar => proc { puts "bar" },
      :baz => proc { puts "baz" }
    }

    def Monkey(method)
      klass = Class.new
      klass.class_eval do
        define_method :shout do
          Blah[method].call
        end
      end
      return klass
    end

    class Chimp < Monkey(:foo)
    end

    class Gorilla < Monkey(:bar)
    end

    a = Chimp.new
    a.shout # => "foo"

    b = Gorilla.new
    b.shout # => "bar"

    Blah[:foo] = proc { puts "I have changed" }
    a.shout # => "I have changed"

    @bb = Bblock.make {
        push ebx
        mov ebx, dest
        pop ebx
        retn
    }

  (def which-answer-is-correct answers
    (let like-ruby-block 
       (fn (answer index return) (when (is string.answer "42") (return:+ index 1)))
       (ccc [do1 "none of the above"
                 (on a answers (like-ruby-block a index _))])))

  > function which_answer_is_correct (...)
  >> for index, answer in ipairs {...} do
  >>   if tostring(answer) == '42' then return index end
  >> end
  >> return 'none of the above'
  >> end
  > =which_answer_is_correct('black', 'white', 42, 'symbolic_logic')
  3

  > -- first a bit of magic to make Tables act more like in Ruby
  > mt = { __index = table }
  > function Table (t)
  >>     return setmetatable(t or {}, mt)
  >> end
  > 
  > function table:each_with_index (block)
  >>     for index, value in ipairs(self) do
  >>         block(value, index)
  >>     end
  >> end

  > -- now actually write our function:
  > function which_answer_is_correct (...)
  >>     local answers = Table {...}
  >>     answers:each_with_index (function (answer, index)
  >>         if tostring(answer) == '42' then return index end
  >>     end)
  >>     return 'none of the above'
  >> end
  >
  > =which_answer_is_correct('black', 'white', 42, 'symbolic_logic')
  none of the above

  function which_answer_is_correct (...)
      return table.find({...}, function (value) return tostring(value) == 42 end)
  end