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lodash源码分析之xorWith #114

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HeftyKoo opened this issue Mar 7, 2020 · 0 comments
Open

lodash源码分析之xorWith #114

HeftyKoo opened this issue Mar 7, 2020 · 0 comments
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api 暴露出来的接口 系列文章

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@HeftyKoo
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HeftyKoo commented Mar 7, 2020

本文为读 lodash 源码的第一百一十三篇,后续文章会更新到这个仓库中,欢迎 star:pocket-lodash

gitbook也会同步仓库的更新,gitbook地址:pocket-lodash

依赖

import baseXor from './.internal/baseXor.js'
import isArrayLikeObject from './isArrayLikeObject.js'
import last from './last.js'

《lodash源码分析之baseXor》
《lodash源码分析之isArrayLikeObject》
《lodash源码分析之last》

源码分析

xorWith 可以传入一个 comparator 比较函数。

源码如下:

function xorWith(...arrays) {
  let comparator = last(arrays)
  comparator = typeof comparator === 'function' ? comparator : undefined
  return baseXor(arrays.filter(isArrayLikeObject), undefined, comparator)
}

同样使用 ... 操作符将参数收集在 arrays 中。

xorWith也 要求 comparator 函数作为最后一个参数传入,因此使用 last 函数将其取出。

如果传入的 comparator 不是 function ,也要将 comparator 重置为 undefined

最后也是调用 baseXor ,此时传入第三个参数 comparator

License

署名-非商业性使用-禁止演绎 4.0 国际 (CC BY-NC-ND 4.0)

最后,所有文章都会同步发送到微信公众号上,欢迎关注,欢迎提意见:

作者:对角另一面

@HeftyKoo HeftyKoo added 系列文章 api 暴露出来的接口 labels Mar 7, 2020
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