Hello, i'd a discussion in russian programmer's forum (rsdn.ru) about haskell and learning it. one interesting point was that imperative programmers imagine that multi-threading programming should require special knowledges. they was really amazed when i showed the following program that creates thread and interacts with it - without locks, semaphores, synchronized access and all other old stuff -- Thread, that cyclically read commands from channel, and executes them graphThread c = do cmd <- getChan c cmd graphThread c -- Creates graphThread and sends a few commands to it for execution main = do c <- newChan forkOS $ graphThread c putChan c (print "Hi") tid <- forkOS $ putChan c (print "Hi from other thread") putChan c (print "Bye") waitThread tid i think that some example like it would be appropriate in haskell book for *novices* - just because it's easy to do in Haskell. so, i vote for adding Multi-threading chapter to such books (and it may be especially important nowadays when everyone are crazy about multi-cores :) -- Best regards, Bulat mailto:Bulat.Ziganshin@gmail.com