What is the difference between fn and fn*?

Question

In Clojure, what is the difference between fn and fn*? I see fn* when I syntax quote a function created with the # macro. For example, in the REPL:

user=> `#(inc %)   
(fn* [p1__342__343__auto__] (clojure.core/inc p1__342__343__auto__))

Is this simply used for debugging purposes to identify that the function was created by # rather than fn directly?

See http://stackoverflow.com/questions/10767305/what-is-fn-and-how-does-clojure-bootstrap — noahlz, Sep 19 '12 at 06:52

sepp2k · Accepted Answer · 2012-09-19T17:43:26.613

17

According to this post on google groups fn* is a primitive form to create functions and fn is a macro built on top of it to implement higher-level features like destructuring.

edited Sep 19 '12 at 17:43

answered Sep 19 '12 at 04:35

sepp2k

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This was a real bitch to find. Googling fn* obviously didn't work. DuckDuckGo came to the rescue though :) – Vicky Chijwani Apr 23 '14 at 17:11

What is the difference between fn and fn*?

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