Add code

Halloween.rkt

@@ -0,0 +1,28 @@
+;; The first three lines of this file were inserted by DrRacket. They record metadata
+;; about the language level of this file in a form that our tools can easily process.
+#reader(lib "htdp-advanced-reader.ss" "lang")((modname Halloween) (read-case-sensitive #t) (teachpacks ()) (htdp-settings #(#t constructor repeating-decimal #t #t none #f () #f)))
+;; (map (lambda (x) (+ 5 x)) (list 1 2 (3))
+(define (zip list1 list2) (
+   map list list1 list2
+))
+
+(define (vec-mult list1 list2) (
+   foldr + 0 (map * list1 list2)
+))
+
+;(list "a" "b")
+;(list 1 2)
+(vec-mult (list 1 2 3) (list 4 5 6))
+
+
+;; number -> (number -> number)
+(define (z x)
+;; number -> number
+(lambda (y) (* x y)))
+
+((lambda (y) (* 3 y)) 4)
+((z 3) 4)
+
+
+
+(cond [ (= 5 7) (#t) ] [  ])