On Wed, Sep 23, 2009 at 4:18 PM, Roger Gilliar <ro...@gilliar.de> wrote:

> I have the following code:
>
> (defn handle-client [in out]
>        (binding [
>                *in* (reader in)
>                ]
>                (with-connection db
>                        (let [outstream (agent (writer out))]
>                                (loop []
>                                        (let [xml (read-input)]
>                                                (if xml
>                                                        (do
>
>  (send-answers (parse outstream (makestr xml)))
>                                                                (recur))
>                                                        (info
> "disconnected"))))))))
>
>
> The problem is, that it doesn't work to assign an agent to the
> outstream. If I do, the content of the agent (the outstream in this
> case) is set to nil after it is passed to send-answers and all send-
> answers does is to store the agent in a struct.  Why that ?
>

Wrapping a mutable thing like an output stream in an agent seems dubious to
me.

Then you don't dereference it -- you pass the agent itself to parse as its
first argument, rather than the stream it wraps. That might not have been
what you intended.

Try just dropping the (agent ...) around (writer out).

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