Scala regex pattern matching doesn't work

Question

val login = "login user=(.*), token=(.*)".r

"login user=SapHana_dummy token=dummy" match {
  case login(user, token) =>
    println("success")
}

This code always throws MatchError. Instead of printing "success" as intended. Why?

Lucas Trzesniewski · Accepted Answer · 2015-04-05 21:58:49Z

3

Because your pattern expects a comma, here:

login user=(.*), token=(.*)
               ^

Which is not in the input text.

Also, to minimize backtracking, I'd use an ungreedy quantifier here:

login user=(.*?) token=(.*)

answered Apr 5, 2015 at 21:58

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