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lodash源码分析之over #360

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HeftyKoo opened this issue Jun 4, 2020 · 0 comments
Open

lodash源码分析之over #360

HeftyKoo opened this issue Jun 4, 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 Jun 4, 2020

本文为读 lodash 源码的第三百五十九篇,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 map from './map.js'

《lodash源码分析之map》

源码分析

over 接收一组函数 iteratees ,并返回一个函数,当函数被调用时,会遍历迭代器,并将函数的参数作为迭代器的参数传入,得到一组结果返回。

源码如下:

function over(iteratees) {
  return function(...args) {
    return map(iteratees, (iteratee) => iteratee.apply(this, args))
  }
}

其实就是调用 map 来遍历迭代器,将每个迭代器的结果返回。并且调用器在调用时,this 绑定到函数创建时的 this

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 Jun 4, 2020
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