I am having an issue properly testing this sentence.
我有一个问题正确测试这句话。
"code in c++ and javascript"
“c ++和javascript中的代码”
I want to match c++ and javascript, but not java. I solved not matching java by introducing a word boundary test on both sides \b.
我想匹配c ++和javascript,但不是java。我通过在两侧引入单词边界测试解决了不匹配java的问题。
Solved with word boundary test.
解决了单词边界测试。
Now the issue - The same approach is not working with "c++", although it seems to me it should be. Is there something I am missing?
现在问题 - 同样的方法不适用于“c ++”,虽然在我看来它应该是。有什么我想念的吗?
And without word boundary
没有字边界
3 个解决方案
#1
3
Since + is not considered a word character, having a \b after + won't work.
由于+不被视为单词字符,因此在+之后使用\ b将不起作用。
You can fix your regex by using a negative lookahead instead of \b on RHS:
你可以在RHS上使用负前瞻而不是\ b修复你的正则表达式:
/\bc\+\+(?!\w)/
To match both java and c++ in alternation:
要在交替中匹配java和c ++:
/\b(?:c\+\+|java)(?!\w)/
#2
2
Are you trying to match both with the same regex? Or independently? This will match c++ if that's what you need:
您是否尝试使用相同的正则表达式进行匹配?还是独立?这将匹配c ++,如果这是你需要的:
c\+{2}
#3
1
For c++ you can try below
对于c ++,您可以尝试下面
/c\+{2}$/
#1
3
Since + is not considered a word character, having a \b after + won't work.
由于+不被视为单词字符,因此在+之后使用\ b将不起作用。
You can fix your regex by using a negative lookahead instead of \b on RHS:
你可以在RHS上使用负前瞻而不是\ b修复你的正则表达式:
/\bc\+\+(?!\w)/
To match both java and c++ in alternation:
要在交替中匹配java和c ++:
/\b(?:c\+\+|java)(?!\w)/
#2
2
Are you trying to match both with the same regex? Or independently? This will match c++ if that's what you need:
您是否尝试使用相同的正则表达式进行匹配?还是独立?这将匹配c ++,如果这是你需要的:
c\+{2}
#3
1
For c++ you can try below
对于c ++,您可以尝试下面
/c\+{2}$/