This is the string I have:

text-center font-weight-bold rounded-0" name="5af417ac324df4c6" placeholder="Enter Video URL" aria-des...

I want to match 5af417ac324df4c6, more exactly a 16 character long alphanumeric string. In the text there is other patterns that may get selected in the regex but are unwanted and to filter them out I use the parameter that the regex should only match characters after ".

\"[a-z0-9]{16} or "[a-z0-9]{16}

Now comes the problem, if I do so, " also gets selected in the matching strings

one solution I found: (?<=")[a-z0-9]{16}, but (?< is not supported in golang.

How can I achieve this

CodePudding user response：

I used re.Submatch, which then worked out:

re := regexp.MustCompile(`"([a-z0-9]{16})`)
return re.FindStringSubmatch(string(req_text))[1]

CodePudding user response：

use substring to strip the ", or capture group