正则表达式\ p {L}和\ p {N} [英] Regular expression \p{L} and \p{N}
本文介绍了正则表达式\ p {L}和\ p {N}的处理方法，对大家解决问题具有一定的参考价值，需要的朋友们下面随着小编来一起学习吧！
问题描述
我是正则表达式的新手，并已获得以下正则表达式:
I am new to regular expressions and have been given the following regular expression:
(\p{L}|\p{N}|_|-|\.)*
我知道*是什么意思|表示或"，并且\转义.
I know what * means and | means "or" and that \ escapes.
但是我不知道\p{L}和\p{N}是什么意思.我已经在Google上搜索了此搜索，但没有结果...
But what I don't know what \p{L} and \p{N} means. I have searched Google for it, without result...
有人可以帮助我吗?
推荐答案
\p{L}匹配类别字母"中的单个代码点.
\p{N}与任何脚本中的任何数字字符匹配.
\p{L}matches a single code point in the category "letter".
\p{N}matches any kind of numeric character in any script.
Source: regular-expressions.info
如果您打算大量使用正则表达式，建议您为该站点添加书签，这非常有用.
If you're going to work with regular expressions a lot, I'd suggest bookmarking that site, it's very useful.
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