ruby integrates power of functional programming from lisp , purest OO from smalltalk, prototype oriented power from self etc etc into one single language i just was wondering that whether the heavy developers/users of reactive languages like kanaputs or reactive-C etc will ever get reactive features in ruby. in kanaputs, If the variable 'c' is defined as c = a + b; and if the reactivity of 'c' is set (c.reactive = true;), then each time the value of 'a' or 'b' changes then the value of 'c' is updated as the result of the addition bye :-) Ashish ashishwave / yahoo.com.