[ZODB-Dev] Comparing BTrees.IOBTree.IOSet(s)

[Dieter Maurer]

Tim Peters wrote at 2003-11-2 16:06 -0500:
 > [Simon Pamies]
 > > how can I compare two IOSets?
 > 
 > Well, first you'd have define what comparing two IOSets means, because
 > there's no compelling total ordering on sets.  You'll have to make up some
 > more-or-less arbitrary meaning.

 > > a = IOSet().update([1,2,3,4])
 > > b = IOSet().update([1,2,3,4])
 > > a == b
 > > 0
 > 

But "equality" is *much* weaker than "total order".

And there is a natural equality test for sets <wink>.
It would make "a == b" true in the example above.

-- 
Dieter