这个字符集是什么意思[\ + -x\ *] [英] What does this character set mean [\+-x\*]

问题描述

这个正则表达式几乎可以匹配任何角色。我对正则表达式中的'x'特别好奇。

this regex seems to match almost any character. I am particularly curious about the 'x' in the regex.

推荐答案

看看这里：正则表达式语言 - 快速参考 [ ^ ]

正则表达式基本语法参考 [ ^ ]

Have a look here: Regular Expression Language - Quick Reference[^]
Regular Expression Basic Syntax Reference[^]

连字符是关键部分，正则表达式是匹配+到x范围内的任何字符或*



例如 ）和z不匹配



不确定为什么不只是[\ * -x]说实话。

The hyphen is the key part, the regex is saying match any character in the range "+" to "x" or *

For example ")" and "z" would not match

Not sure why it isn't just [\*-x] to be honest.

这篇关于这个字符集是什么意思[\ + -x\ *]的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！