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# [psion@mv.mv.com: Re: parents and locking, listening etc]

- Date: Mon, 10 Mar 1997 16:20:50 -0600
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    Date: Mon, 10 Mar 1997 05:46:40 PST
    From: Chris Williams <psion@mv.mv.com>
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    To: tim@itchen.hants.gov.uk, Moo Cows <moo-cows@parc.xerox.com>
    Subject: Re: parents and locking, listening etc
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    > @lock exit with !<parent(#myparent)> ???
    There's no builtin way to do that, however $lock_utils can be modified
    to lock for all kids of an object, I remember coding that a while ago.
    I'll see if I can find it, although I think it may be on the MOO where
    the idiot ArchWiz has turned all the rest of us $wiz's into $builders..
    As I recall, I just added another unary operator like ! (I think I used
    K, for kids), and added it to the big elseif in the main lock-checking
    verb. And the parsing ones. Mainly, if you look at how it does !, you
    can do pretty much the same thing with any unary operator. PArsing is
    the same thing exactly (if fact, I think there you may just hafta add it
    to a list of them), the lock-checking is basicly the same, you've just
    got to do an $object_utils:isa check instead of a != check.

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