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加这个判断有啥用
单纯这句也能通过所有测试代码呀

return value > other

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greater than 的缩写。

目的是强制比较数值。

因为 JS 是弱类型,你无法保证入参是个啥,比如下面的代码:

let a = {};
let b = [];

a > b;      // true
_.gt(a, b); // false

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