Here's an approach that doesn't use macros. I'm not sure I'd actually
do this, but here it is just for grins.
(defn bind [pred]
(fn [[x bool]] [x (and (pred x) bool)]))
(defn comp# [ & preds ]
(let [ phi (reduce comp (map bind preds))]
(fn [x] (second (phi [x true])))))
user> (filter (comp# even? pos? #(zero? (rem % 3)) ) (range -30 30))
(6 12 18 24)
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