Hello Team,

I am a moderate Clojure user and now I planned to explore more Clojure, I 
used to 
write different functions every time where I could write asynchronous 
functions. 

As came from object-oriented background and trying to understand 
asynchronous functions

I took some example on using fn functions

((fn [& nums] (/ (apply + nums) (count nums))) 1 2 3 4)

In the above statement, 1 2 3 4 is added after the function defined as 
input,
But in the below function I did not understand how fn behaves, what is the 
input for a request, Or what is the methodology , Basically I am not 
understanding the flow,

(defn wrap-content-type [handler content-type] 
     (fn [request] 
           (let [response (handler request)] 
                (assoc-in response [:headers "Content-Type"] 
content-type))))

Can someone help me, please?

Thanks,
Ganesh N

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