Andreas Raab wrote:

>"Change Set:		WeakIDHash-ar
>Date:			1 July 2003
>Author:			Andreas Raab
>
>The CS makes weak identity dictionaries hash the same way as
>IdentityDictionary, spreading out hash values to reduce the number of
>collisions."
>  
>

I'd like to take this opportunity to remind people of the 
LargeCollections package on SqueakMap.  It is a minor refactoring of the 
growth related aspects of the collection framework along with a couple 
new types of collections.  It is designed to aid in working with large 
collections (particularly the case where those large collections start 
to noticeably impact the performance of incremental GC).  At its core is 
a LargeArray class which can be used as a drop in replacement for Array 
(thus enabling any collection based on Array to grow very large without 
degrading the performance of IGC).  Hashed collections are also 
refactored such that everything is defined in terms of a hash getter 
method and a comparison method (which eliminates a lot of redundant code 
in the collection hierarchy).

- Stephen