I think this is one of those cases where the rules are different for
libraries than applications.

Does your lib need to pull in core.async, and does it need to be coupled to
a specific version?  If it's a building block sort of lib that clojure and
the community prefers, I think the answer is no.  Is this more of an
opinionated 'framework' or set of batteries (luminus might fall in this
category)?  In that case, yes.

As an application-writer having to write some glue code feels less frustrating
than when libs make assumptions that I don't like.

On Mon, Jun 1, 2015 at 5:05 PM Eldar Gabdullin <eldar...@gmail.com> wrote:

> I would implement everything sticking to just callbacks, then create
> separately requirable core.async version of API if that matters.
> Ideally this should be a separate lib, but practically, it seems better to
> just have a separate file.
>
> понедельник, 1 июня 2015 г., 22:18:19 UTC+3 пользователь Christopher Small
> написал:
>
>> Greetings
>>
>> I imagine most of us here would rather use core.async channels over
>> callbacks in their application code, particularly with more complicated
>> applications. But is it okay/preferable for Clojure libraries to force
>> their users to use core.async channels as part of an API (an event channel,
>> for example)?
>>
>> As much as I love core.async, I can't help but wonder whether sticking
>> with callbacks for an API isn't a simpler/better design strategy. It's easy
>> enough to drop messages on a channel in a callback, and this let's users
>> opt-in. But if one expects core.async channels are what most would prefer
>> anyway, is it okay to foist them upon everyone?
>>
>> As a follow up, does your opinion on the matter change if implementations
>> of an API become simpler using core.async channels?
>>
>>
>> Looking forward to your thoughts :-)
>>
>> Chris Small
>>
>>
>>
>> PS I'm asking because I'm working on a physical computing API (
>> https://github.com/clj-bots/pin-ctrl) and debating between using
>> channels vs callbacks for the edge detection functionality (if you're not
>> familiar, edge detection let's you asynchronously handle changes in pin
>> state, such as button pushes). If you're interested in this question as it
>> applies specifically to this application, feel free to join the discussion
>> on our gitter channel: https://gitter.im/clj-bots/chat
>>
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