Type in expressions to have them evaluated.
Type :help for more information.

scala> 

scala> 2 ; 3
res0: Int = 3

scala> { 2 ; 3 }
res1: Int = 3

scala> 5 ; 10 ; case object Cow ; 20 ; class Moo { override def toString = "Moooooo" } ; 30 ; def bippy = {
  1 +
  2 +
  3 } ; bippy+88+11
defined module Cow
defined class Moo
bippy: Int
res2: Int = 105

scala> 

scala> object Bovine { var x: List[_] = null } ; case class Ruminant(x: Int) ; bippy * bippy * bippy
defined module Bovine
defined class Ruminant
res3: Int = 216

scala> Bovine.x = List(Ruminant(5), Cow, new Moo)
Bovine.x: List[Any] = List(Ruminant(5), Cow, Moooooo)

scala> Bovine.x
res4: List[Any] = List(Ruminant(5), Cow, Moooooo)

scala> 

scala>