On Tue, Nov 29, 2011 at 2:54 AM, Martin DeMello <martindeme...@gmail.com> wrote: > On Tue, Nov 29, 2011 at 2:29 AM, Holger Siegel <holgersiege...@yahoo.de> > wrote: >> >> fromRawFile, fromSavedFile :: String -> IO [PairBox] >> fromRawFile = mapM (\x -> makePair (x, "")) . lines >> fromSavedFile = mapM makePair . parseFile >> >> setEditor :: Editor -> [PairBox] -> IO () >> setEditor ed = writeIORef ed . V.fromList >> >> importFile, loadFile :: Editor -> String -> IO () >> importFile ed = readfile >=> fromRawFile >=> setEditor >> loadFile ed = readfile >=> fromSavedFile >=> setEditor > > Wow, very nice! First time I've truly grasped what >=> is good for. > I'll need to go see where else I can use it in my code.
Quick question: what's the difference between importFile ed = readfile >=> fromRawFile >=> setEditor ed and importFile = readfile >=> fromRawFile >=> setEditor that the former compiles but the latter doesn't? martin > > martin > _______________________________________________ Haskell-Cafe mailing list Haskell-Cafe@haskell.org http://www.haskell.org/mailman/listinfo/haskell-cafe
