Now it makes sense. Thank you
среда, 7 мая 2014 г., 15:39:38 UTC+3 пользователь tbc++ написал:
>
> 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 <akm...@gmail.com<javascript:>
> > 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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>
>
>
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