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Re: Re: On timely destruction?

by Elian (Parson)
on Aug 29, 2002 at 06:48 UTC ( #193686=note: print w/ replies, xml ) Need Help??


in reply to Re: On timely destruction?
in thread On timely destruction?

Thanks for asking. I'm a zelot on timely destruction, and have been meaning to lobby for not dropping it in Perl 6!
Cool, then. Give me examples of things that'll break without timely finalization!
If there is a performance issue, at least make it optional.
Ah, therein lies the rub. You can't make something like this optional. It's either there, with full support for it, or it's not there. There is no optional here. (If there was, I'd not be asking this question)

Unfortunately none of the things you've presented quite do it. Filehandles will be cleaned up reasonably quickly. Windows definitely ought not go missing without some active action on the part of a program. And "after" semantics on objects when they get destroyed, well, you get that. It's just potentially indeterminate when it happens. (Which, I realize, is the issue)

I think if the compiler could emit code that says "exit scope; if referece count of the variable reached zero, then call function" then it can take it from there.
There are no reference counts in parrot, and thus none in perl 6. If there were this wouldn't be an issue.


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