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Aug
20
Teorema Gli oggetti sono le chiusure dei poveri.
Dimostrazione costruiamo un oggetto Counter in Scheme
Scheme:
| (define (Counter initial-value) | |
| (let ([value initial-value]) | |
| (list | |
| (lambda (x) | |
| (set! value (- value x))) | |
| (lambda (x) | |
| (set! value (+ value x))) | |
| (lambda () | |
| value)))) |
C.V.D.
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