[Haskell-cafe] Extending GHCi

[Steffen Schuldenzucker]

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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