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lodash源码分析之stringSize #170

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HeftyKoo opened this issue Mar 28, 2020 · 0 comments
Open

lodash源码分析之stringSize #170

HeftyKoo opened this issue Mar 28, 2020 · 0 comments
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internal 内部函数或方法 系列文章

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@HeftyKoo
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本文为读 lodash 源码的第一百六十九篇,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 asciiSize from './asciiSize.js'
import hasUnicode from './hasUnicode.js'
import unicodeSize from './unicodeSize.js'

《lodash源码分析之asciiSize》
《lodash源码分析之hasUnicode》
《lodash源码分析之unicodeSize》

源码分析

stringSize 用来计算 string 的长度,一般情况下用字符串的 length 属性即可计算长度,但是 unicode 编码有点特殊。

源码如下:

function stringSize(string) {
  return hasUnicode(string) ? unicodeSize(string) : asciiSize(string)
}

如果 string 中有 unicode 字符,则使用 unicodeSize 计算长度,否则使用 asciiSize 来计算长度。

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

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