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kindlychung/aupdate.clj Secret

Created May 12, 2015 12:29
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aupdate.clj
(use 'clojure.pprint)
(defmacro aupdate-in [a i f & args]
`(aget ~a ~i (~f (aget ~a ~i) ~@args)))
(pprint
(macroexpand-1
(aupdate-in (int-array [1 2 3]) 1 * 5)))
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CompilerException java.lang.IllegalArgumentException: Argument is not an array, compiling:(/Users/kaiyin/personal_config_bin_files/workspace/cina/src/cina/fn_browser.clj:41:42)

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