Re: How to neatly destroy instances?

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Article #317

#317

From: Thomas A. Russ
Date: Tue, 13 Oct 1992 00:24

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In article <...> huangp@wasser.Colorado.EDU (PeiYu Huang) writes:

 >      Well, by "neatly" I mean something other than:
 > 
 >        cl>(setq my-instance (make-instance 'MY-CLASS))
 >           #<MY-CLASS @ .......)
 > 
 >        cl>(setq my-instance NIL)
 > 
 > All suggestions are welcome. Thanks in advance..
 > 

If you don't use global (special) variables, then you don't need to do
anything to eliminate unused instances.  One simple solution would be:

(let ((my-instance (make-instance 'MY-CLASS)))
  ....)

After the let form, my-instance is not bound and the instance of
MY-CLASS that was created is freed for the garbage collector.

Why do you feel a need to destroy instances explicitly?
--

Thomas A. Russ                                             tar@isi.edu    
USC/ISI, 4676 Admiralty Way, Marina del Rey, CA 90292      (310) 822-1511

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From: tar@ISI.EDU (Thomas A. Russ)
Newsgroups: comp.lang.clos,comp.lang.lisp
Subject: Re: How to neatly destroy instances?
Message-ID: <22625@venera.isi.edu>
Date: 13 Oct 92 00:24:46 GMT
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In-reply-to: huangp@wasser.Colorado.EDU's message of 12 Oct 92 22:35:05 GMT

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