cutcutcodec.core.opti.cache.singleton

Allow to create only one instance of an object.

Classes

MetaSingleton

For share memory inside the current session.

Details

class cutcutcodec.core.opti.cache.singleton.MetaSingleton

For share memory inside the current session.

Notes

The arguments needs to be hashable.

Examples

>>> from cutcutcodec.core.opti.cache.singleton import MetaSingleton
>>> class A:
...     pass
...
>>> class B(metaclass=MetaSingleton):
...     pass
...
>>> class C(metaclass=MetaSingleton):
...     def __init__(self, *args, **kwargs):
...         self.args = args
...         self.kwargs = kwargs
...
>>> A() is A()
False
>>> B() is B()
True
>>> C(0) is C(0)
True
>>> C(0) is C(1)
False
>>>