From: "Jan E." Date: 2012-10-19T23:27:08+09:00 Subject: Re: would it make sense for "def method" instance evaled on a class to create an instance method? Hi, this is the very difference between instance_eval and class_eval: A "def" expression in instance_eval will always create a singleton method. If you want an instance method (i. e. the same behaviour as inside a class body), you have to use class_eval. This is explained further in the book "The Ruby programming language": http://books.google.de/books?id=jcUbTcr5XWwC&pg=PA270 -- Posted via http://www.ruby-forum.com/.