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brehaut/gist:1773494

Created February 8, 2012 20:42
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gistfile1.clj
;; original function
(defn assoc-meta [metable & kvs]
(with-meta metable (apply assoc (meta metable) kvs)))
;; rewritten with an explicit conjugation
(defn conjugate [translate untranslate f]
(comp untranslate f translate))
(defn assoc-meta* [metable & kvs]
((conjugate meta
(partial with-meta metable)
#(apply assoc % kvs)) metable))
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