2011-10-31 |
Paul Boddie |
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Switched the attribute usage empty set representation from a new ObjectSet
instance to None, introducing logic to handle the addition of attribute usage
observations to such empty sets and to detect empty sets when type deductions
are being made. This reduces the amount of allocated instances enormously.
Changed the combination function for mapping dictionaries (mapping from names to
object sets) to not propagate observations for names to locations where such
names are not defined. |
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