streamly/examples/listdir.hs

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2017-08-23 23:52:49 +03:00
{-# LANGUAGE FlexibleContexts #-}
import Control.Monad.IO.Class (liftIO)
import Control.Monad.Trans.Class (lift)
import Path.IO (listDir, getCurrentDir)
import Path (Path, Dir, reldir)
import Asyncly
main = runAsyncly $ getCurrentDir >>= readdir
where readdir d = do
(ds, fs) <- lift $ listDir d
liftIO $ mapM_ putStrLn $ map show fs ++ map show ds
for ds readdir -- concurrent version
-- each ds >>= readdir -- serial version