val businessName = "Montreux Jazz Café"

def squareOf(x: Int) = x * x

def fac(n: Int) = if (n == 0) 1 else n * fac(n - 1)

case class MyPair[A, B](x: A, y: B);
val p = MyPair(1, "scala") // type: MyPair[Int, String]

def id[T](x: T) = x
val q = id(1)              // type: Int

Seq(1, 3, 4).map(x => x * 2)  // List(2, 6, 8)

var obj = null

obj = new AnyRef