The regex operator | (vertical bar) is the alternation, so this|that matches either the string this or the string that.

regex操作符 |（竖线）表示备选项，因此this|that匹配字符串 this或字符串 that。

youdao

The regex operator | (vertical bar) is the alternation, so this|that matches either the string this or the string that.

regex操作符 |（竖线）表示备选项，因此this|that匹配字符串 this或字符串 that。

youdao