[swannodette]

One my favorite features that came out of reducers - short circuiting reduce!

   (reduce 
     (fn [a b] 
       (if (> a 100) (reduced a) (+ a b))) 
     (range 100000))
   => 105

I've often had to use loop/recur instead of reduce because you could not short circuit. No longer.

[invalidOrTaken]

YES, I was hunting around for this in 1.4, happy to see it's arrived.

[malkia]

This is so beautiful, like recur's blessing in disguise.

[k0t0n0]

cool