27 lines
635 B
Python
27 lines
635 B
Python
from typing import Generic, TypeVar, Dict
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from typing import Optional
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K = TypeVar("K") # 键类型
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V = TypeVar("V") # 值类型
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class GenericCache(Generic[K, V]):
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def __init__(self):
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self._store: Dict[K, V] = {}
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def set(self, key: K, value: V) -> None:
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self._store[key] = value
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def get(self, key: K) -> Optional[V]:
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return self._store.get(key)
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# 使用示例
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cache = GenericCache[str, int]() # 键为 str，值为 int
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cache.set("count", 100)
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value: Optional[int] = cache.get("count") # 返回 100
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cache.set(112, "123")
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for key in cache._store.keys():
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print(type(cache.get(key))) |