28 lines
745 B
Racket
Executable file
28 lines
745 B
Racket
Executable file
;; The first three lines of this file were inserted by DrRacket. They record metadata
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;; about the language level of this file in a form that our tools can easily process.
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#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)))
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;; (map (lambda (x) (+ 5 x)) (list 1 2 (3))
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(define (zip list1 list2) (
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map list list1 list2
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))
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(define (vec-mult list1 list2) (
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foldr + 0 (map * list1 list2)
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))
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;(list "a" "b")
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;(list 1 2)
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(vec-mult (list 1 2 3) (list 4 5 6))
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;; number -> (number -> number)
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(define (z x)
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;; number -> number
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(lambda (y) (* x y)))
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((lambda (y) (* 3 y)) 4)
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((z 3) 4)
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(cond [ (= 5 7) (#t) ] [ ])
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