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Environment model
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Hi,
I am a beginner in Scheme. I'm given the following example:
==
((lambda (x) (* x x))
((lambda (a b) (a (* b b)))
(lambda (a) (* a a))
(* 2 2)))
==
and the computed value is 65536. Could someone explain me step by step
why the value is this one?
Thanks.
- --
Merciadri Luca
See http://www.student.montefiore.ulg.ac.be/~merciadri/
- --
Failure is not falling down, you fail when you don't get back up.
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Reply
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 Luca.Merciadri (232)
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2/12/2012 5:05:53 PM |
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Merciadri Luca wrote:
> ((lambda (x) (* x x))
> ((lambda (a b) (a (* b b)))
> (lambda (a) (* a a))
> (* 2 2)))
> and the computed value is 65536. Could someone explain me
> step by step why the value is this one?
It is not difficult. This (* 2 2) evaluates to 4, and after
that what is it that you do not understand?
Which Scheme implementation are you using? If I
understand correctly, Racket has a step-by-step evaluator
that could help you.
--
Marco Maggi
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 marco9664 (30)
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2/12/2012 7:46:08 PM
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I've now understood. Thanks.
- --
Merciadri Luca
See http://www.student.montefiore.ulg.ac.be/~merciadri/
- --
It is better to die on one's feet than live on one's knees.
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Luca.Merciadri (232)
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2/12/2012 10:03:38 PM
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2 Replies
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