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ALBINALI4
Jan 28, 2002, 1:59:57 AM1/28/02
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Hi,
How can a variable in scheme be live but not in scope?
How can a variable in scheme be live but not in scope?
Thanks.
Fahd
Ulrich Hobelmann
Jan 28, 2002, 5:06:26 AM1/28/02
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ALBINALI4 wrote:
>
> Hi,
> How can a variable in scheme be live but not in scope?
>
> Hi,
> How can a variable in scheme be live but not in scope?
(define (new-counter-from n)
(lambda ()
(set! n (+ n 1))
n))
If called, this functions gives you a closure which captures n, but
doesn't
give you any access to it.
In essence everything bound anywhere (in any environment) is live, but
only one
environment list is in scope.
Ulrich
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