def __eq__(self, other):
if self is other:
return True
if not isinstance( # pylint: disable=isinstance-second-argument-not-valid-type
other, AbstractSet):
return NotImplemented
return _PySet.__eq__(self, other)
def __hash__(self): """Compute the hash value of a frozenbag.""" if not hasattr(self, '_hash_value'): self._hash_value = Set._hash(self) return self._hash_value
__and__ = Set.__and__
__or__ = Set.__or__
__sub__ = Set.__sub__
__xor__ = Set.__xor__
issubset = __le__
issuperset = __ge__
union = __or__
intersection = __and__
difference = __sub__
symmetric_difference = __xor__
isdisjoint = Set.isdisjoint
Set.register(PSet)
Hashable.register(PSet)
_EMPTY_PSET = PSet(pmap())
def pset(iterable=(), pre_size=8):
"""
Creates a persistent set from iterable. Optionally takes a sizing parameter equivalent to that
used for :py:func:`pmap`.
>>> s1 = pset([1, 2, 3, 2])
>>> s1
pset([1, 2, 3])
"""
if not iterable:
#MappingView.register(EmptyMapping)
KeysView.register(EmptySet)
ItemsView.register(EmptySet)
ValuesView.register(EmptyCollection)
assert issubclass(EmptySet, KeysView)
assert issubclass(EmptySet, ItemsView)
assert issubclass(EmptySet, Set)
assert issubclass(EmptySet, MappingView)
assert issubclass(EmptyCollection, ValuesView)
assert issubclass(EmptyCollection, Collection)
assert issubclass(EmptyCollection, MappingView)
Mapping.register(EmptyMapping)
Set.register(EmptySet)
Sequence.register(EmptySequence)
assert issubclass(EmptyMapping, Mapping)
assert issubclass(EmptySet, Set)
assert issubclass(EmptySequence, Sequence)
if 0:
Mapping.register(EmptyThree)
Set.register(EmptyThree)
Sequence.register(EmptyThree)
assert issubclass(EmptyThree, Mapping)
assert issubclass(EmptyThree, Set)
assert issubclass(EmptyThree, Sequence)
def __hash__(self):
return Set._hash(self)