英文:
Regular expression matching beginning of line OR a set of characters
问题
起初我以为这应该很简单，我只是忽略了什么，但是到目前为止，凭借我有限的正则表达式知识，我无法解决这个问题。
我有一个正则表达式，类似于 [一些字符]MYNAME，实际的内容是：
rx = rx + `[ ,\t,,\,,\(,=,@,\s]+(MYNAME)`
我希望这个正则表达式能够同时检测以MYNAME开头的行。所以问题是，有没有办法在[]内部添加^和其他字符？或者将^与[一些字符]进行逻辑“或”操作？
我无法在JavaScript或Go中使其工作。如果与此相关的问题有差异，我对Go语言的特定解决方案感兴趣。
英文:
At first I thought this must be very easy, I am just overlooking something, but so far with my limited knowledge of regex I can't figure this out,
I have a regex like [some characters]MYNAME actual thing is:
rx = rx + `[ ,\t,,\,,\(,=,@,\s]+(MYNAME)`
I want this regex to <b>also</b> detect a line that <b>starts</b> with MYNAME.
So the question is, is there a way to add ^ inside [] with other things? or to OR the ^ with a [some characters]?
I can't make it work either with javascript or golang. If there are differences related to this matter, I am interested in the golang specific solutions.
答案1
得分: 4
你可以使用替代符号。此外，你的字符类中有一些不必要的字符：
- 我不知道那些逗号的作用是什么？你是打算将它们作为分隔符使用吗？如果是的话，请将它们删除。
- 此外，在字符类中不需要转义
(。 - 由于你已经添加了
\s，所以不需要单独添加\t和" "。
因此，你的正则表达式可以简化为：
"(?:[(=@\s]+|^)(MYNAME)"
英文:
You can use alternation. Also, there are some unnecessary characters in your character class:
- I don't know what those commas are supposed to do? Did you intent them to act as separator? If yes, remove them.
- Also, you don't need to escape
(in a character class. - Since you have added
\s, you don't need to add\tand" "separately.
So, your regex can be simplified to:
"(?:[(=@\s]+|^)(MYNAME)"
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