One "gotcha" is that atoms add-watches do not always guarantee order
semantics. So if you have a watch put [old-val new-val] on a channel, and
your atom operation is something like (swap! a inc), you may see values in
your channel like this:

[0 1]
[2 3]
[1 2]
[3 4]
[6 7]
[4 5]

This is because the watches are dispatched in different threads. So just be
careful when doing this.

Timothy

On Fri, Jul 31, 2015 at 6:53 AM, Stefan Kamphausen <ska2...@gmail.com>
wrote:

>
> On Friday, July 31, 2015 at 8:21:18 AM UTC+2, Raymond Huang wrote:
>>
>> I'd like to use `add-watch` on an atom which writes the data to a
>> core.async channel. So far, I've come up with this, but it seems bad
>> because I create a new go-routine everytime something happens.
>>
>>
> Makes me think, one might want to have an add-channel function on ARef in
> general.
>
>
> stefan
>
>
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zero–they had no way to indicate successful termination of their C
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