正則表達式 - 文檔

Question

大家好我正在通過一些舊的代碼，並跑過一個reg-ex，我不知道它做了什麼，任何人都可以闡明它。

<(.|\n)*?>|{(.|\n)*?} 

它在替換string.replace語句。

Answer 1

把你的正則表達式爲Regex101.com

在底部標題爲引導Your regular expression explained

Answer 2

根據使用RegexBuddy這是它的劑量：

Match either the regular expression below (attempting the next alternative only if this one fails) «<(.|\n)*?>» 
    Match the character 「<」 literally «<» 
    Match the regular expression below and capture its match into backreference number 1 «(.|\n)*?» 
     Between zero and unlimited times, as few times as possible, expanding as needed (lazy) «*?» 
     Note: You repeated the capturing group itself. The group will capture only the last iteration. Put a capturing group around the repeated group to capture all iterations. «*?» 
     Match either the regular expression below (attempting the next alternative only if this one fails) «.» 
     Match any single character that is not a line break character «.» 
     Or match regular expression number 2 below (the entire group fails if this one fails to match) «\n» 
     Match a line feed character «\n» 
    Match the character 「>」 literally «>» 
Or match regular expression number 2 below (the entire match attempt fails if this one fails to match) «{(.|\n)*?}» 
    Match the character 「{」 literally «{» 
    Match the regular expression below and capture its match into backreference number 2 «(.|\n)*?» 
     Between zero and unlimited times, as few times as possible, expanding as needed (lazy) «*?» 
     Note: You repeated the capturing group itself. The group will capture only the last iteration. Put a capturing group around the repeated group to capture all iterations. «*?» 
     Match either the regular expression below (attempting the next alternative only if this one fails) «.» 
     Match any single character that is not a line break character «.» 
     Or match regular expression number 2 below (the entire group fails if this one fails to match) «\n» 
     Match a line feed character «\n» 
    Match the character 「}」 literally «}» 

的匹配爲：

<> 
<...> 
{} 
{...} 

當......是任何文字