rrichards · March 31, 2011 13:56
diff --git a/first_class_methods.rb b/first_class_methods.rb
 class Adder
  def initialize(a)
    @a = a
  end  
  def add_to(b)
    @a + b
  end
 end
 add_four_to = Adder.new(4).method(:add_to)
 [1,2,3].map(&add_four_to)
 # => [5, 6, 7]
	class Adder
	def initialize(a)
	@a = a
	end
	def add_to(b)
	@a + b
	end
	end
	add_four_to = Adder.new(4).method(:add_to)
	[1,2,3].map(&add_four_to)
	# => [5, 6, 7]