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看代码是直接对比，太局限了，基本只能原子类型的数组能用
我的 list 是 { key: string, name: string }[]，需要根据 key 找出 index，理解性用 getIndex(key)，看源码发现不对劲
const getIndex = useCallback(
(key: number) => keyList.current.findIndex((ele) => ele === key),
[],
);建议加个第二个参数
const getIndex = useCallback(
(key: number, attr?: string | (val: T) => boolean) => keyList.current.findIndex((ele) => {
if (typeof attr === 'function') return attr(ele)
if (typeof attr === 'string') return ele[attr] === key
return ele === key
}),
[],
);