正则表达式匹配以 $ 开头的整个单词 [英] Regex to match whole words that begin with $

问题描述

我需要一个正则表达式来匹配以 $ 开头的整个单词.表达式是什么，如何测试?

I need a regex to match whole words that begin with $. What is the expression, and how can it be tested?

示例:

这个 $word 和 $this 应该被提取出来.

This $word and $this should be extracted.

在上面的句子中，会找到$word和$this.

In the above sentence, $word and $this would be found.

推荐答案

如果只想匹配整个单词，则需要单词字符选择器

If you want to match only whole words, you need the word character selector

\B\$\w+

这将匹配 $ 后跟一个或多个字母、数字或下划线.在 Rubular 上试用

This will match a $ followed by one or more letters, numbers or underscore. Try it out on Rubular

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