Method clear

src/react/properties.py:96–103

(self)

            observer.on_remove(item)

    def clear(self) -> None:
        copy = list(self.data)

        super().clear()

        for item in copy:
            for observer in self._observers:
                observer.on_remove(item)

    def extend(self, other: Iterable[_T]) -> None:
        first_index = len(self.data)