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

问题描述

显然，您可以使用|(管道?)来表示OR，但是有没有一种方法也可以表示AND?

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所有内容的文本段落，但没有特定的顺序.

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

使用非消耗正则表达式.

Use a non-consuming regular expression.

典型的(即 Perl/Java)符号是:

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

(?=expr)

这意味着匹配 expr 但之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."

您可以根据需要做任意多的这些，这将是一个和".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)

如果您需要在其中保存一些数据，您甚至可以在非消费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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