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You can reach the person managing the list at beginners-ow...@haskell.org When replying, please edit your Subject line so it is more specific than "Re: Contents of Beginners digest..." Today's Topics: 1. Network PortNumber deprecation warning (Jeff C. Britton) ---------------------------------------------------------------------- Message: 1 Date: Wed, 14 Aug 2019 17:59:14 +0000 From: "Jeff C. Britton" <j...@iteris.com> To: "beginners@haskell.org" <beginners@haskell.org> Subject: [Haskell-beginners] Network PortNumber deprecation warning Message-ID: <mwhpr17mb10399289a9453f33119e565ece...@mwhpr17mb1039.namprd17.prod.outlook.com> Content-Type: text/plain; charset="utf-8" I have just installed Haskell using Stack on Windows. I wanted to try and write some code to do network programming with TCP/IP. I found a simple example on Stack Overflow to start me off. I'm having some problems with PortNumber and deprecated warnings. I don't know how to modify the code to be deprecation free. stack install network - installed version 2.8.0.1 ------------------------- package.yaml network >= 2.8.0.1 --------------------------- The following code gives a deprecation warning, but ultimately my sample compiles and runs. import qualified Network import qualified Network.Socket main = Network.withSocketsDo $ do handle <- Network.connectTo "192.168.1.2" (Network.PortNumber 7200) talk handle `finally` hClose handle D:\work\hsSocket\app\Main.hs:14:46: warning: [-Wdeprecations] In the use of data constructor `PortNumber' (imported from Network): Deprecated: "The high level Network interface is no longer supported. Please use Network.Socket." ----------------------------------------- So, now I try and use Network.Socket as the warning indicates. main = Network.withSocketsDo $ do handle <- Network.connectTo "192.168.1.2" (Network.Socket.PortNumber 7200) talk handle `finally` hClose handle D:\work\hsSocket\app\Main.hs:15:46: error: Not in scope: data constructor `Network.Socket.PortNumber' Module `Network.Socket' does not export `PortNumber'. | 15 | handle <- Network.connectTo "192.168.1.2" (Network.Socket.PortNumber 7200) -------------- next part -------------- An HTML attachment was scrubbed... URL: <http://mail.haskell.org/pipermail/beginners/attachments/20190814/dccc0b89/attachment-0001.html> ------------------------------ Subject: Digest Footer _______________________________________________ Beginners mailing list Beginners@haskell.org http://mail.haskell.org/cgi-bin/mailman/listinfo/beginners ------------------------------ End of Beginners Digest, Vol 134, Issue 2 *****************************************