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Editorial Team
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Asked: 2026-05-16T14:02:35+00:00

I missed a short syntax to express fundamental operations over functions in Clojure. Because

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I missed a short syntax to express fundamental operations over functions in Clojure. Because of that, I started to use º as a shorthand for comp (cause it’s closer to the math operator but easily accessible) and ¬ for partial (because reminds me of missing parameters).

What are your thoughts about this? is it useful or does it have the risk of making code confusing?

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1 Answer

  1. Editorial Team

    I prefer not to use non-ASCII characters in code (outside of string / character literals and comments). How about having your editor prettify the code for you when it’s displayed, but not when saving it? E.g. the following function will cause Emacs to display comp as ∘ (the actual function composition symbol):

    (defun pretty-comp ()
  (font-lock-add-keywords
   nil `(("\\<\\(comp\\)\\>"
          (0 (progn (compose-region (match-beginning 1)
                                    (match-end 1)
                                    ?∘)
                    nil))))))

    Apparently it’s not perfect — it seems to mangle the display of compfoo etc. — but you might be able to tweak it to work for you.

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