正则表达式:是否有AND运算符? [英] Regular Expressions: Is there an AND operator?

问题描述

很明显，您可以使用|(竖线?)来表示OR，但是也可以使用一种方式来表示AND吗?

Obviously, you can use the | (pipe?) to represent OR, but is there a way to represent AND as well?

具体来说，我想匹配包含某个短语的全部但没有特定顺序的文本段落.

Specifically, I'd like to match paragraphs of text that contain ALL of a certain phrase, but in no particular order.

推荐答案

使用非消耗性的正则表达式.

Use a non-consuming regular expression.

典型的(即Perl/Java)表示法是:

The typical (i.e. Perl/Java) notation is:

(?= expr )

这意味着匹配 expr ，但此后在原始匹配点继续匹配".

This means "match expr but after that continue matching at the original match-point."

您可以根据需要执行任意多个操作，这将是一个与".示例:

You can do as many of these as you want, and this will be an "and." Example:

(?=match this expression)(?=match this too)(?=oh, and this)

如果您需要在其中使用一些数据，甚至可以在非使用表达式中添加捕获组.

You can even add capture groups inside the non-consuming expressions if you need to save some of the data therein.

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