From: Love U Ruby Date: 2013-03-12T17:42:44+09:00 Subject: Re: Confusion with empty block printing Thanks for your re-explanation. This is how IRB works I understood. >> print nil, {} {}>> ?> ^C >> print nil, {}.class Hash>> Now this thread can be closed. Thanks to all guys who helped me to understand this `micro concept`. :) -- Posted via http://www.ruby-forum.com/.