I've been trying to refactor the -> and ->> forms to use a common macro
form.
Ended up with this.
(defmacro threading [a b x forms]
(loop [x x
forms forms]
(if forms
(let [form (first forms)
f (first form)
r (rest form)
threaded (if (seq? form)
(with-meta
`(~f ~`(~a ~`(list ~x ~@r))
~`(~b ~`(list ~x ~@r)))
(meta form))
(list form x))]
(recur threaded (next forms)))
x)))
(defmacro -> [x & forms]
`(threading ~'first ~'second
~x ~forms))
(defmacro ->> [x & forms]
`(threading ~'second ~'first
~x ~forms))
This does work, but it's a bit of whammy.
Anyone with suggestions for improvement?
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