Scala regex match failing with scala.MatchError for \w and \d (word or digit) match -

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i trying basic regex pattern matching. although syntax seems correct, it's failing when use \w or \d word , digit matching.

import scala.util.matching.regex  object ex {   def main(args:array[string]):unit = {     val pattern =  new regex("(\\w)\\s(\\d)");     val pattern(words,num) = "asas1 11"     print(words+" "+num)   } }

this error get:

exception in thread "main" scala.matcherror: asas1 11 (of class java.lang.string)     @ com.cccu.semantic.ex$.main(ex.scala:8)     @ com.cccu.semantic.ex.main(ex.scala)

note: using scala ide build of eclipse sdk, build id 4.4.1 scala 2.11.8 on windows machine.

\w , \d match single character, need add there + modifier. throwing exception because can't match input against regular expression.

scala> val pattern =  new regex("(\\w+)\\s(\\d+)");    val pattern(words,num) = "asas1 11" pattern: scala.util.matching.regex = (\w+)\s(\d+) words: string = asas1 num: string = 11

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