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** [issues:#5391] Prob::equal_p: discard "origin" property**
**Status:** Started
**Created:** Thu Jul 26, 2018 02:31 PM UTC by David Kastrup
**Last Updated:** Thu Jul 26, 2018 02:31 PM UTC
**Owner:** nobody
Prob::equal_p: discard "origin" property
Previously elements of class Input was considered equal when compared
as part of Music property lists but this did not take into account
that some music might store its origin (if any) at different locations
in its property lists. So we just discard any "origin" property
completely, regardless of position in the property list and its actual
value type.
Also contains commit:
Don't set origin on copied music explicitly
There would be some mild incentive if the origin were accessed an
inordinary amount of times (and thus leaving it unset would maximize
access times to it) but there is no evidence for that. One reason
might be to ensure greater structural similarity between copies of
music, but Prob::equal_p has been changed to be robust against
differences here.
http://codereview.appspot.com/363740043
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