diff options
Diffstat (limited to 'lore/Control/Concurrent/Go.hs')
-rw-r--r-- | lore/Control/Concurrent/Go.hs | 13 |
1 files changed, 7 insertions, 6 deletions
diff --git a/lore/Control/Concurrent/Go.hs b/lore/Control/Concurrent/Go.hs index 05626d7..69ce9ed 100644 --- a/lore/Control/Concurrent/Go.hs +++ b/lore/Control/Concurrent/Go.hs @@ -70,6 +70,7 @@ go = forkIO {- Example: (TODO: move to module-level docs) +-- can I just implement forM/Traversable over the channel? forRange :: TChan (Maybe a) -> (a -> IO b) -> IO [b] forRange ch fn = helper fn [] where -- I could not get Intero or ghc to accept a type-annotation for the helper function, @@ -83,19 +84,19 @@ forRange ch fn = helper fn [] where b <- fn v helper fn (b : acc) -generate :: (Num a, Enum a) => TChan (Maybe a) -> IO () -generate ch = do +feedData :: (Num a, Enum a) => TChan (Maybe a) -> IO () +feedData ch = do forM_ [1 .. 9999] (\x -> writeCh ch (Just x)) writeQ ch Nothing -- EOF value -process :: TChan (Maybe Int) -> IO () -process c = do +printData :: TChan (Maybe Int) -> IO () +printData c = do forRange c (print :: Int -> IO ()) return () main :: IO () main = do ch <- chan - go $ generate ch - process ch + go $ feedData ch + printData ch -} |