There are some bugs with my previous post. Here's a revised version.
;;----------USING LIST COMPREHENSIONS-------
(for [n (range 10) :when (even? n)] n)
(apply concat
(for [n (range 10) :when (even? n)]
[n (* 2 n)]))
;;--------EMIT/COLLECT IMPLEMENTATION----------
(def -collector)
(defn emit [x]
(set! -collector (conj -collector x)))
(defmacro collect [& body]
`(binding [-collector []]
~...@body
-collector))
;;--------USING EMIT/COLLECT---------
(collect
(doseq [ n (range 10)]
(when (even? n) (emit n))))
(apply concat
(for [n (range 10) :when (even? n)]
[n (* 2 n)]))
Sincerely
-Patrick
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