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Task/Delegates/Clojure/delegates.clj
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13
Task/Delegates/Clojure/delegates.clj
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(defprotocol Thing
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(thing [_]))
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(defprotocol Operation
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(operation [_]))
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(defrecord Delegator [delegate]
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Operation
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(operation [_] (try (thing delegate) (catch IllegalArgumentException e "default implementation"))))
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(defrecord Delegate []
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Thing
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(thing [_] "delegate implementation"))
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