esteric-laguage-with-ruby

http://www.amazon.co.jp/Ruby%E3%81%A7%E4%BD%9C%E3%82%8B%E5%A5%87%E5%A6%99%E3%81%AA%E3%83%97%E3%83%AD%E3%82%B0%E3%83%A9%E3%83%9F%E3%83%B3%E3%82%B0%E8%A8%80%E8%AA%9E-~Esoteric-Language~-%E5%8E%9F-%E6%82%A0/dp/4839927847