On Fri, Aug 28, 2015 at 12:37 PM, Akhil Wali <green.transis...@gmail.com>
wrote:

>
> This does work, but it's a bit of whammy.
> Anyone with suggestions for improvement?
>

I went over this quickly, though it seems to work OK:

(defn threading [x first? forms]
  (reduce
   (fn [x form]
     (if (seq? form)
       (let [[op & args] form
             args (conj (cond-> args (not first?) vec) x)]
         (apply list op args))
       (list form x)))
   x forms))

(defmacro -> [x & forms]
  (threading x true forms))

(defmacro ->> [x & forms]
  (threading x false forms))

Take care,
Moe

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