2007-12-24 Ruby 1.9の変更点 メモ。http://eigenclass.org/hiki.rb?Changes+in+Ruby+1.9 http://arika.org/diary/20070613 http://www.ruby-lang.org/ja/man/?cmd=view;name=ruby+1.9+feature http://svn.ruby-lang.org/cgi-bin/viewvc.cgi/trunk/ChangeLog?view=markup