[Haskell] the wonders of lazy IO

it took me quite a while to isolate the following. what does this program print? certainly "A" (written by the first system call) is different from "B"? import System main = do system "echo A > foo" a <- readFile "foo" system "echo B > foo" b <- readFile "foo" print (a == b) best regards, -- -- Johannes Waldmann -- Tel/Fax (0341) 3076 6479/80 -- ---- http://www.imn.htwk-leipzig.de/~waldmann/ -------