fn
is the Clojure equivalent of lambda
from Lisp.
(fn [x] (+ x 1)) ; #
((fn [x] (+ x 1)) 7) ; 8
These work as you'd expect when you pass them to functions such as map
(map (fn [x] (+ x 1)) (list 1 2 3 4)) ; (2 3 4 5)
(defn adder [x] (+ x 1)) ; #'user/adder
(map #'adder (list 1 2 3 4) ; (2 3 4 5)
Sharp quote (#') works same as it does in Lisp it appears.
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