From: Edoardo Rossi Date: 2013-01-14T01:04:11+09:00 Subject: attr_accessor question Hello ruby-talk. I hope this isn't a too silly question, but: who respond_to? true at attr_accessor? irb(main):028:0> Module.respond_to?(:to_s) => true irb(main):029:0> Module.respond_to?(:attr_accessor) => false irb(main):030:0> Module.respond_to?(:attr) => false I understand it's a class_macro in Module#attr_accessor... #attr_accessor, #attr_reader, #attr_writer Thanks to all. e.