Skip to content

Instantly share code, notes, and snippets.

@knjname

knjname/01_162740.clj

Created December 1, 2016 07:34
Show Gist options
  • Star 0 You must be signed in to star a gist
  • Fork 0 You must be signed in to fork a gist
  • Save knjname/6c67dd6f9d4adce82d8230e08a13ecdf to your computer and use it in GitHub Desktop.
Save knjname/6c67dd6f9d4adce82d8230e08a13ecdf to your computer and use it in GitHub Desktop.
Download ZIP
Raw
01_162740.clj
(defmacro do-nothing [x]
(println "Metadata inside do-nothing is: " (meta x))
x)
(println "Metadata outside do-nothing is: " (meta (do-nothing ^{:key "hoge"} (range 10))))
;; THE RESULT:
;; Metadata inside do-nothing is: {:line 5, :column 63, :key hoge}
;; Metadata outside do-nothing is: nil
Sign up for free to join this conversation on GitHub. Already have an account? Sign in to comment