Why is this possible in a language based on immutability:

(let [x 1
        x (inc x)
        x (inc x)
        x (inc x)]
   x)

;;=> 4

Maybe under the hood (ie. memory registers/pointers etc.) this isn't strictly mutation but as a relative newcomer to Clojure I find it goes against the grain of what I find elsewhere in the language.

gvim


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