正则表达式如何匹配后面『是某个模式』或『是行尾』？ - V2EX

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使用零宽断言可以匹配后面『是某个模式』，但后面也可能『是行尾』，应该怎么写？

2 replies • 2014-09-24 20:01:14 +08:00

1

icedx

Sep 24, 2014 via Android

r'Nyan|$'
匹配Nyan字符或行尾

2

liberize

OP

Sep 24, 2014

刚刚发现 xxx(?=(pattern|$)) 是可以工作的，结帖

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