Created
March 3, 2015 18:58
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making a mutable cell in scheme
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| > (define (make-cell value) (cons (lambda () value) (lambda (new-value) (set! value new-value)))) | |
| > (define cell (make-cell 'x)) | |
| > ((car cell)) | |
| x | |
| > ((cdr cell) 'y) | |
| > ((car cell)) | |
| y |
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