Yes, I find that much clearer too. Thanks!
On Saturday, July 22, 2017 at 4:50:23 PM UTC-4, tbc++ wrote:
>
> If we think about what we're doing here is a stateful filter, then maybe
> we could leverage a few more core Clojure functions:
>
>
> (defn distinct-by [f coll]
> (let [seen (atom #{})]
> (filter (fn [itm]
> (let [m (f itm)]
> (when-not (@seen m)
> (swap! seen conj m))))
> coll)))
>
>
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