【每日一题】- 2020-04-19 - !!~A.indexOf(edge._label) 是什么意思？

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【每日一题】- 2020-04-19 - !!~A.indexOf(edge._label) 是什么意思？ #157

Closed azl397985856 closed 3 years ago

azl397985856 commented 3 years ago

该题目由 qq 群友贡献。

PS：如上代码截取自某开源库。

Gentlemancj commented 3 years ago

-1 取反为0，其他取反均不为0，因此只有返回-1为0，即不存在这个元素。!!转为boolean

azl397985856 commented 3 years ago

@Gentlemancj 正解

stale[bot] commented 3 years ago

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