On 02/04/2011 12:36 PM, C K Kashyap wrote:

Hi,
I am looking for a way to extend GHCI such that I can do something like this

$ ghci

GHCi, version 6.12.3: http://www.haskell.org/ghc/ :? for help

Loading package ghc-prim ... linking ... done.

Loading package integer-gmp ... linking ... done.

Loading package base ... linking ... done.

Loading package ffi-1.0 ... linking ... done.

Prelude> startMyFunction

Prelude>

startMyFunction will do a forkIO and listen on a network port for interaction with a remote process and will drop back to GHCI prompt where I can invoke haskell functions that'll control the way the interaction with the remote process occurs. Can this be done?

I am not sure that I understand you correctly, but ghci simulates the IO monad, so what about:

Prelude> :l MyModule.hs
*MyModule> conn <- waitForAndAcceptConnection
*MyModule> someData <- getSomeData conn
*MyModule> sendSomeAnswer conn $ processSomeData someData
...

-- Steffen

Regards,

Kashyap


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