# File lib/active_support/core_ext/module/attr_accessor_with_default.rb, line 21 def attr_accessor_with_default(sym, default = nil, &block) raise 'Default value or block required' unless !default.nil? || block define_method(sym, block_given? ? block : Proc.new { default }) module_eval("def \#{sym}=(value) # def age=(value)\nclass << self; attr_reader :\#{sym} end # class << self; attr_reader :age end\n@\#{sym} = value # @age = value\nend # end\n", __FILE__, __LINE__ + 1) end