19 lines
479 B
Python
19 lines
479 B
Python
from dataclasses import dataclass
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from typing import Mapping, Type, TypeVar
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T = TypeVar("T")
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@dataclass
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class ServiceContainer:
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_dependencies: Mapping[str, T] = {}
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def register(self, name: str, instance: T) -> None:
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self._dependencies[name] = instance
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def retrieve(self, name: str, _: Type[T]) -> T:
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return self._dependencies[name]
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# in python 3.12 we can use retrieve[T] :)
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# https://docs.python.org/3/reference/compound_stmts.html#type-params |