CODEWITHSUNDEEP
regexscalapattern-matchingcapture
Ben
Ben

Reputation: 756

Regex Non-Capturing Groups ins Scala

I want to use Regex non-capturing groups in scala, briefly worded "?:".

After hours of testing various cases I came here to search for a solution. I found this question and its answer, but it didn't worked for me. Is it possible to make non-capturing groups work in scala regexes when pattern matching

So I wrote a minimal example to test the statement of the thread above. 

val test = ("""(?:<.*>)(.*)(?:<.*>)""".r findFirstIn ("<test>hello</test>")) getOrElse ""
println("DEBUG MESSAGE (test): " + test)

Expected Output: hello

Real Output: <test>hello</test>

So what is wrong with my code?

Upvotes: 2

Views: 758

Answers (1)

Federico Piazza
Federico Piazza

Reputation: 31035

Try with this regex instead:

<.*?>(.*?)<.*?>

Working demo

enter image description here

Scala code

Also, try this code to get the content of capturing groups #1 like this:

val string = "<test>hello</test>"
val pattern = """<.*?>(.*?)<.*?>""".r
pattern.findAllIn(string).matchData foreach {
   m => println(m.group(1))
}

Upvotes: 2

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