Factory

Sorry, the person who is responsible for the description was eaten by hydras last week.

hydra_slayer.factory.call_meta_factory(factory: Union[Type, Callable[[...], Any]], args: Tuple, kwargs: Mapping)

Creates a new instance from factory.

Parameters

• factory – factory to create instance from

• args – *args to pass to the factory

• kwargs – **kwargs to pass to the factory

Returns

Instance.

hydra_slayer.factory.default_meta_factory(factory: Union[Type, Callable[[...], Any]], args: Tuple, kwargs: Mapping)

Returns a new instance or a new partial object.

• _mode_=’auto’

  Creates a new instance from factory if factory is class (like call_meta_factory()), else returns a new partial object (like partial_meta_factory()).

• _mode_=’call’

  Returns a result of the factory called with the positional arguments args and keyword arguments kwargs.

• _mode_=’partial’

  Returns a new partial object which when called will behave like factory called with the positional arguments args and keyword arguments kwargs.

Parameters

• factory – factory to create instance from

• args – *args to pass to the factory

• kwargs – **kwargs to pass to the factory

Returns

Instance.

Raises

ValueError – if mode not in list: 'auto', 'call', 'partial'.

Examples

>>> default_meta_factory(int, (42,))
42

>>> # please note that additional () are used
>>> default_meta_factory(lambda x: x, (42,))()
42

>>> default_meta_factory(int, ('42',), {"base": 16})
66

>>> # please note that additional () are not needed
>>> default_meta_factory(lambda x: x, (42,), {"_mode_": "call"})
42

>>> default_meta_factory(lambda x: x, ('42',), {"_mode_": "partial", "base": 16})()
66

hydra_slayer.factory.partial_meta_factory(factory: Union[Type, Callable[[...], Any]], args: Tuple, kwargs: Mapping)

Returns a new partial object which when called will behave like func called with the positional arguments args and keyword arguments kwargs.

Parameters

• factory – factory to create instance from

• args – *args to merge into the factory

• kwargs – **kwargs to merge into the factory

Returns

Partial object.