Vale property stacks

["Peter B. West" <pb...@powerup.com.au>]

Karen, Arved,

It is with great sadness that I announce the demise of my much-loved 
property stacks.  Their functionality gradually dwindled away until all 
they had left was the initial values of all of the properties and the 
latest specified value.  Initial values can be maintained more cheaply 
in an array, and as the node had to maintain the set of values specified 
by its attributes anyway, in order to pop the stack, locating the 
nearest specified value could be done at small extra expense by climbing 
the FO tree.  Considering that the operation is likely to be infrequent, 
the storage overhead was too great.  Requiescant in pace.

Peter
-- 
Peter B. West  pbwest@powerup.com.au  http://www.powerup.com.au/~pbwest/
"Lord, to whom shall we go?"


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