From: Sonny Chee Date: 2007-01-21T09:42:39+09:00 Subject: Implementing a "calcuator" feature Hey Guys, Can someone recommend a fast but robust way to implement a calculator feature? I want to allow my users the ability to enter simple agebraic expressions and then press 'calc'. My initial thought was to: 1) Check the expression for "bad words" and escapes by checking against a black list. 2) Any expressions that pass step 1 are then evaluated with 'eval'. Anyone have better ideas? In terms of the black list, does anyone know how I can load the list of ruby reserved words without having to actually type them all in by hand? Soroe. -- Posted via http://www.ruby-forum.com/.