val p = "[0-9]+".r //=> scala.util.matching.Regex = [0-9]+ p.pattern //=> java.util.regex.Pattern = [0-9]+ find val p = "[0-9]+".r p.findAllIn("1 22") //=> scala.util.matching.Regex.MatchIterator = non-empty iterator p.findAllIn("1 22").to…