2008-04-09 ã¯ã¦ãªã°ã©ãã¸ã®ãã¹ããè¡ãã¹ã¯ãªãããåãã Ruby ã¡ã¢ ãã¿ã¾ããå¼ã£è¶ãã¾ããâ http://d.hatena.ne.jp/riocampos+tech/20080409/p2