core.async provides its own implementation of merge that returns a
ManyToMany channel. So that's why the call to merge is returning a channel.
But why I haven't a clue. I still claim that you have a dirty repl or
something.
Timothy
On Wed, May 7, 2014 at 6:11 AM, Valentin Luchko <akme...@gmail.com> wrote:
> Sorry, but you guys didn't understand the problem.
> *tbc++*, I don't use core.async, so I don't require it
> dgrnbrg, I don't want to interface these libraries together.
> Let me try explain again.
>
> 1. I have http-kit socket server running
> 2. When client connects I store its connection (http-kit's AsyncChannel)
> in map @clients as a key, line 19 (swap! clients assoc con true)
> 3. Then when some data received from client line 21-22
>
> (on-receive con (fn [data]
> (handler)))
> I invoke handler
>
> (defn handler []
> (future (let
> [merged (merge {} @clients)]
> (println merged)) ; => #<ManyToManyChannel
> clojure.core.async.impl.channels.ManyToManyChannel@5d9c832a>, but expect to
> get copy of @clients
> #_(let
> [into-map (into {} @clients)] ; here I get exception
> <IllegalArgumentException java.lang.IllegalArgumentException: No
> implementation of method: :take! of protocol:
> #'clojure.core.async.impl.protocols/ReadPort found for class: nil
> (println into-map))))
>
> Here I want just to make the copy of @clients with simple merge to empty map,
> but I don't get a copied map, I get #<ManyToManyChannel
> clojure.core.async.impl.channels.ManyToManyChannel@5d9c832a>
>
> When trying use into I get I get exception.
>
> I just want to know what is going on, why I get ManyToManyChannel instead of
> @clients map copy?
>
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