@jgdavey: I fiddled around and got the sliding window working

here is the gist https://gist.github.com/raymcdermott/e495d7907ce83a64b049

one thing that - as a newbie - feels wrong is the need to put guards around reading from the channel like this

(defn simple-printer [in]
  (a/go-loop []
    (if-let [item (<! in)]
      (println item))
    (recur)))

I thought - wrongly in my code at least - that <! would only read from the channel when data was available but I had to add a guard as I kept reading nil from the channel

any guidance or tips on what I’m doing wrong here?

@raymcdermott: sure you're not writing nil to windowed somewhere?

never mind, seems like that could only happen in window-filter and it doesn't. <! should only proceed once there is a value, and if it returns nil that should mean the channel is closed

ah, it’s probably the closed use case - that makes sense

I really should RTFM 😉

@raymcdermott: I took a quick crack at it as well. Not sure if it would meet all your needs, but here ya go: https://gist.github.com/jgdavey/d928136d035645bd15ec