Method instance

src/wechaty/utils/async_helper.py:58–63

singleton pattern for MessageIdContainer

(cls)

    
    @classmethod
    def instance(cls) -> SingleIdContainer:
        """singleton pattern for MessageIdContainer"""
        if cls._instance is None or len(cls._instance.ids) > cls._instance.max_size:
            cls._instance = SingleIdContainer()

        return cls._instance


def single_message(on_message_func):    # type: ignore