
27 Mar
2010
27 Mar
'10
12:29 a.m.
I searched "schedul" on hayoo!, but had no clue. It seems that I can use scheduleEventAt from Control.Monad.Event.Classes. But what is type "e"? It seems like an event. How do I define an event? I have not learned Monad yet. Can some one give me a simple example? Suppose I want to run an external program "pg" which in Haskell's language has the type of String -> IO (). Thanks, Hong