Have you checked out: http://clojure.blip.tv/file/812787? Clojure's author talks about agents and the other concurrency support mechanisms in Clojure. The latter half of the talk is a walk-through of the ant simulation. It's really good presentation.
- Blaine On Dec 7, 12:56 am, "Matthew Wyatt" <[EMAIL PROTECTED]> wrote: > Hi all, > I have a newbie question about Agents. I've been looking at the ants.clj > file:http://clojure.googlegroups.com/web/ants.clj?hl=en&gda=-X7f3joAAABoLi... > Most of it makes sense to me, but the use of Agents is confusing. For > example, the line: > (send-off animator animation) > associates the "animator" Agent with the "animation" function, which I > follow. But then the animation function looks like: > (defn animation [x] > (when running > (send-off *agent* #'animation)) > (. panel (repaint)) > (. Thread (sleep animation-sleep-ms)) > nil) > > That third line has me lost - I don't know what *agent* is. In Common Lisp, > that would indicate a global variable, but no such variable is declared (two > other functions, "evaporation" and "behave" have a similar call, and are the > only other references to *agent* in the file). I'm guessing it's some sort > of reference to the agent associated with the current Action, but where is > that documented? Secondly, why does the function immediately send off to > another agent? Is this in order to "loop" the function (that is, keep > spawning an Action to update the agent)? If that is the case, is the > Thread.sleep call in order to hold a reference to the agent so that the next > Action doesn't start immediately? > Thanks for your time helping a newb; I'm pretty excited about Clojure, > and can't wait to get my hands dirty with it. > -Matt --~--~---------~--~----~------------~-------~--~----~ You received this message because you are subscribed to the Google Groups "Clojure" group. To post to this group, send email to clojure@googlegroups.com To unsubscribe from this group, send email to [EMAIL PROTECTED] For more options, visit this group at http://groups.google.com/group/clojure?hl=en -~----------~----~----~----~------~----~------~--~---
