如何在Swift中使用组替换字符串中的出现? [英] How to replace occurences in string using groups in Swift?

问题描述

我只需要替换:

< p> ，< div>

与

\ n< p> ， \ n< div>

用一个单一模式替换.有可能吗?

in string with one single pattern replacing. Is it possible?

let string = "<p>hello</p> my <div>Doggy</div>"
let newString = string.replacingOccurrences(of: "<p>", with: "\n<p>").replacingOccurrences(of: "<div>", with: "\n<div>")

使用正则表达式有更好的解决方案吗?

is there a better solution with regex?

推荐答案

您可以执行正则表达式搜索，并在其中替换一个模板字符串:

You can do a regular expression search, with a template in the replacement string:

let string = "<p>hello</p> my <div>Doggy</div>"
let newString = string.replacingOccurrences(of: "<p>|<div>", with: "\n$0", options: .regularExpression)

对于每个匹配，将 $ 0 模板替换为与该模式实际匹配的模板.

For each match, the $0 template is replaced by what actually matched the pattern.

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