CPSC 110 QUESTIONS| WITH COMPLETE SOLUTIONS

Compound: when, example?


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when: two or more items that naturally belong together


example: x and y coordinate of an image on a background

, Compound Data HtDD


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(define-struct block (x y))
;; Block is (make-block Number Number)
;; interp. a block at position x y
(define B1 (make-block 2 2))
(define (fn-for-block b)
(... (block-x b) ; Number
(block-y b))) ; Number
;; Template rules used:
;; - compound: 2 fields




Simple Atomic HtDD


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;; Time is Natural
;; interp. number of clock ticks since start of game

(define START-TIME 0)
(define OLD-TIME 1000)


#;
(define (fn-for-time t)
(... t))

;; Template rules used:
;; - atomic non-distinct: Natural




Intervals HtDD