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Gave __xor__/symmetric_difference a factor of 2-5 speed boost.

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This commit is contained in:
Tim Peters 2002-08-25 19:47:54 +00:00
parent 37faed2532
commit 334b4a5c39
1 changed files with 6 additions and 4 deletions
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10
Lib/sets.py
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@ -197,11 +197,13 @@ class BaseSet(object):
result = self.__class__() result = self.__class__()
data = result._data data = result._data
value = True value = True
for elt in self: selfdata = self._data
if elt not in other: otherdata = other._data
for elt in selfdata:
if elt not in otherdata:
data[elt] = value data[elt] = value
for elt in other: for elt in otherdata:
if elt not in self: if elt not in selfdata:
data[elt] = value data[elt] = value
return result return result