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@werbitt werbitt/gist:3729077
Created Sep 15, 2012

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Clojure Arity Issue
user=> (defn f [& ks]
#_=> (let [ms [{:a "abc" :b "123"} {:a "def" :b "456"}]]
#_=> (if ks
#_=> (map (fn [x] (select-keys x ks)) ms)
#_=> (ms))))
user=> (f :b)
({:b "123"} {:b "456"})
user=> (f)
ArityException Wrong number of args (0) passed to: PersistentVector clojure.lang.AFn.throwArity (
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