"
 COPYRIGHT (c) 1992 by Claus Gittinger
              All Rights Reserved

 This software is furnished under a license and may be used
 only in accordance with the terms of that license and with the
 inclusion of the above copyright notice.   This software may not
 be provided or otherwise made available to, or used by, any
 other person.  No title to or ownership of the software is
 hereby transferred.
"

IdentityDictionary subclass:#WeakIdentityDictionary
       instanceVariableNames:''
       classVariableNames:''
       poolDictionaries:''
       category:'System-Support'
!

WeakIdentityDictionary comment:'

COPYRIGHT (c) 1992 by Claus Gittinger
              All Rights Reserved

this is a special class to support keeping track of dependents without
keeping the values alive - values simply become nil when no one else
references it.

$Header: /cvs/stx/stx/libbasic/WeakIdentityDictionary.st,v 1.1 1993-10-21 00:50:27 claus Exp $

written dec 92 by claus
'!

!WeakIdentityDictionary methodsFor:'private'!

setTally:size
    "create initial (empty) key and value arrays"

    valueArray := WeakArray new:size.
    keyArray := Array new:size.
    tally := 0
! !