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Re: Lists, scheduling and repeated objects


From: Marcus G. Daniels
Subject: Re: Lists, scheduling and repeated objects
Date: 07 Aug 1999 07:21:16 -0700
User-agent: Gnus/5.070084 (Pterodactyl Gnus v0.84) Emacs/20.4

>>>>> "JG" == Jonathan Greenberg <address@hidden> writes:

JG> Model adds object "A" to list.  Model Schedules "A" to be dropped
JG> at t + n.  Model adds object "A" AGAIN and then schedules it to be
JG> dropped AGAIN at a later time.

If you drop an object, it's gone.  If you recreate an instance of the
same kind of object and insert it on a List, it's a different object.  
(And the variable you assign the object to is incidental.)

JG> At a time after object A was added and dropped, but before the second 
JG> time A was dropped, what will the list contain?

Garbage -- that's a programming error.  Also note that dropping an
object does not mean it is removed from the lists that reference it.

(Btw, this is really a question for swarm-support, not swarm-modelling.)


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