Today's Example

(define make-adder
  (lambda (x)
    (lambda (y)
      (+ x y))))

(define add-2 (make-adder 2))
(define add-3 (make-adder 3))

(add-2 5)  ; ==> 7
(add-3 5)  ; ==> 8
(add-2 12) ; ==> 14

Jim Miller