516 // String interpolations as patterns

   517 

   518 val date = "2000-01-01"

   519 val s"$year-$month-$day" = date

   520 

   521 def parse_date(date: String) = date match {

   522   case s"$year-$month-$day" => Some((year.toInt, month.toInt, day.toInt))

   523   case s"$day/$month/$year" => Some((year.toInt, month.toInt, day.toInt))

   524   case _ => None

   525 } 

   526 

   527 

   738 // if you like verbosity, you can full-specify the literal. 

   739 // Don't go telling that to people, though

   740 (1 to 100).filter((x: Int) => x % 2 == 0).sum 

   741 

   742 // As x is known to be an Int anyway, you can omit that part

   743 (1 to 100).filter(x => x % 2 == 0).sum

   744 

   745 // As each parameter (only x in this case) is passed only once

   746 // you can use the wizardy placeholder syntax

   747 (1 to 100).filter(_ % 2 == 0).sum

   748 

   749 // But if you want to re-use your literal, you can also put it in a value

   750 // In this case, explicit types are required because there's nothing to infer from

   751 val isEven: (x: Int) => x % 2 == 0

   752 (1 to 100).filter(isEven).sum