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[Chicken-users] newbie: questions about set-finalizer!
From: |
Alejandro Forero Cuervo |
Subject: |
[Chicken-users] newbie: questions about set-finalizer! |
Date: |
Mon, 15 Dec 2008 23:57:31 +0100 |
User-agent: |
Mutt/1.5.13 (2006-08-11) |
I have a question about finalizers.
If you run the following in csi:
(define x (list 1 2 3))
(begin (set-finalizer! x (lambda (o) (format #t "Delete: ~A~%" o))) #t)
(define y (list 4 5 6))
(begin (set-finalizer! y (let ((p x)) (lambda (o) (format #t "Delete: ~A:
~A~%" o p)))) #t)
(gc #t)
(set! x #f)
(gc #t)
Why do you get “Delete: (1 2 3)”, the output of the finalizer for x,
even though the finalizer for y depends on the value of x?
Am I misunderstanding the way finalizer procedures get executed?
Alejo.
http://azul.freaks-unidos.net/
- [Chicken-users] newbie: foreign pointers that depend on Scheme objects, Alejandro Forero Cuervo, 2008/12/15
- [Chicken-users] newbie: questions about set-finalizer!,
Alejandro Forero Cuervo <=
- Re: [Chicken-users] newbie: questions about set-finalizer!, felix winkelmann, 2008/12/16
- Re: [Chicken-users] newbie: questions about set-finalizer!, felix winkelmann, 2008/12/17
- Re: [Chicken-users] newbie: questions about set-finalizer!, Alejandro Forero Cuervo, 2008/12/20
- Re: [Chicken-users] newbie: questions about set-finalizer!, felix winkelmann, 2008/12/21
- Re: [Chicken-users] newbie: questions about set-finalizer!, felix winkelmann, 2008/12/22
- Re: [Chicken-users] newbie: questions about set-finalizer!, felix winkelmann, 2008/12/22
Re: [Chicken-users] newbie: foreign pointers that depend on Scheme objects, felix winkelmann, 2008/12/18