ITEC 380 2008fall ibarland

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lect02c
unions

After reviewing the previous lecture (define-struct), create a structure for armadillos, which aggregate three pieces of info: the name, the length (in m), and whether or not they're alive.

; Data definition:
; A dillo is:
;   (make-dillo string number boolean)

(define-struct dillo (name length alive?))



; hit-with-truck:  (-> dillo dillo)
;
(define (hit-with-truck a-dillo)
  ...)







Union data

; Data definition:
; An Animal is
;  - a boa, or
;  - a dillo.

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©2008, Ian Barland, Radford University Last modified 2008.Sep.13 (Sat)

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