Hi all,
I'm practising my Haskell by writing a simple TCP echo server and finding
that getting my program control to be succinct is rather tricky. In
particular, I have return () everywhere, my error handling is verbose and
I'm not entirely sure my recursion is the cleanest way syntactically to
On 28 June 2011 18:08, John Ky newho...@gmail.com wrote:
Hi all,
I'm practising my Haskell by writing a simple TCP echo server and finding
that getting my program control to be succinct is rather tricky. In
particular, I have return () everywhere, my error handling is verbose and
I'm not
Ivan Lazar Miljenovic wrote:
I don't think you need all those return () everywhere... And at the
end, why do you do line - getLine when you don't use the result?
The hlint program would have flagged both of those and possibly
others. See:
http://community.haskell.org/~ndm/hlint/
Erik
--
Hi Eric, Ivan,
On 28 June 2011 18:32, Erik de Castro Lopo mle...@mega-nerd.com wrote:
The hlint program would have flagged both of those and possibly
others. See:
Cool!
It didn't flag either for me, but it recommended replacing ++ (show
port)with ++
show port, if then else with unless,
There is the void function in Control.Monad:
http://hackage.haskell.org/packages/archive/base/latest/doc/html/Control-Monad.html#v:void
Instead of using return () you can just use void processLine.
Also some people like to use the either function instead of matching on
Left/Right. In this case
Thanks Jonas,
I feel much better already:
import Control.Concurrent
import Control.Exception
import Control.Monad
import Network
import System.IO
import System.IO.Error (isEOFError)
main = withSocketsDo $ do
sListen - listenOn (PortNumber 8000)
putStrLn Listening on Port 8000
forkIO $
