scala>:silent
scala> 1+1
scala> case class A(x: Int)
scala> A("string")
-- [E007] Type Mismatch Error: -------------------------------------------------
1 | A("string")
  |   ^^^^^^^^
  |   Found:    ("string" : String)
  |   Required: Int
  |
  | longer explanation available when compiling with `-explain`
1 error found
scala> Option[Int](2) match { case Some(x) => x }
1 warning found
-- [E029] Pattern Match Exhaustivity Warning: ----------------------------------
1 | Option[Int](2) match { case Some(x) => x }
  | ^^^^^^^^^^^^^^
  | match may not be exhaustive.
  |
  | It would fail on pattern case: None
  |
  | longer explanation available when compiling with `-explain`
scala>:silent
scala> 1 + 2
val res3: Int = 3
