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jbrechtel/memoize.clj

Created September 15, 2012 14:54
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Confused with memoize
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memoize.clj
;not sure why this doesn't really memoize the anonymous function call
(defn add [a b] ((memoize (fn [x y] (Thread/sleep 1000) (+ x y))) a b))
;this does correctly memoize the (non anonymous) function call
(defn adds [a b] (Thread/sleep 1000) (+ a b))
(def addf (memoize adds))
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jbrechtel commented Sep 15, 2012

I suspect this has to do with the first one recreating the anonymous function every time add is called, but this behavior isn't intuitive to me.

Is it because (= adds adds) is true but (= (fn ...) (fn ...)) is false?

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