def add_sentence(self, element: Sentence) -> None:
"""Dodaje zdanie `element` do zbioru, o ile już w nim nie jest. Konkretniej dodaje wartość hash zdania."""
if not isinstance(element, Sentence):
raise TypeError("History can only store sentences")
if DEBUG:
return super().add(tuple(element.getUnique()))
else:
return super().add(hash(element))
def __contains__(self, item: Sentence) -> bool:
if DEBUG:
return super().__contains__(tuple(item.getUnique()))
return super().__contains__(hash(item))