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teknomage1 · 03-20-2006, 10:05 PM

Lisp is god's programming language.

You could make an a-list that relates each car to it's manufacturor (Why you would have an exercise relating cars in a language with a primitive called CAR is beyond me). Anyway, an a-list relates data like this (key1 value1 key2 value2 ...) . There's a function for finding the value of a key called GETF. so for this example you could do something like this.

Code:

(defparameter *models* '(fiesta ford sk100 merc focus ford))
(getf *models* 'fiesta)
=> FORD
(getf *models* 'sk100)
=> MERC
(getf *models* 'focus)
=>FORD

03-20-2006, 10:05 PM	#2 (permalink)
teknomage1 Jack of all trades Join Date: Feb 2005 Location: Los Angeles Posts: 598	Lisp is god's programming language. You could make an a-list that relates each car to it's manufacturor (Why you would have an exercise relating cars in a language with a primitive called CAR is beyond me). Anyway, an a-list relates data like this (key1 value1 key2 value2 ...) . There's a function for finding the value of a key called GETF. so for this example you could do something like this. Code: (defparameter models '(fiesta ford sk100 merc focus ford)) (getf models 'fiesta) => FORD (getf models 'sk100) => MERC (getf models 'focus) =>FORD __________________ Stop intellectual property from infringing on me