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comp



    function
    boot.janet on line 694, column 1

    (comp & functions)

    Takes multiple functions and returns a function that is the 
    composition of those functions.

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(defn square [x] (* x x))
(defn square-then-dec [x] ((comp dec square) x))
(defn dec-then-square [x] ((comp square dec) x))
(square-then-dec 3)  # => 8
(dec-then-square 3)  # => 4

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