> >> If I'm running register outside runWriterT everything will work.
>
> Maybe just
>
> > lift $ register $ print "freed2"
>
> or I didn't catch something?
>
>
>
> 2012/3/1 Alexander V Vershilov <
alexander.vershilov@gmail.com>
>
> Hello.
>
> I'm trying to add monad stack into network-conduit, and everything
> works except some details [1].
>
> I've run runReaderT $ runTCPServer (wrapper around runResourceT) and
> inside conduit I want to run writer to gather results of inner computation.
> In inner computation I want to use IO, data from outter stack (ReaderT)
> so I'm running {-1-}:
>
> (k,t) <- lift $ runWriterT $ ask >>= \x -> tell [x] {- 1 -}
>
> and {-2-}
>
> (k,t) <- lift $ runWriterT $ do {- 2 -}
> x <- ask
> liftIO $ print $x+1
> tell [x]
>
> and that will work (except I've thought I should not lift runWriterT, but
> calling functions inside.
>
> And finally in computation that will run once I want to register cleaning
> function (for example register $ putStrLn "cleaned") ({-3-})
>
> (k,t) <- lift $ runWriterT $ do {- 3 -}
> x <- ask
> liftIO $ print $x+1
> register $ print "freed2"
> tell [x]
>
> but I've got type error. If I'm running register outside runWriterT
> everything
> will work.
>
> I would apperated if there will be any suggestions how to make this code
> better or use register in internal computation (runWriterT)
>
> [1]
https://gist.github.com/1941151
> --
> Best regards,
> Alexander V Vershilov
>
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