object CollectionsDay2 { println("Welcome to the Scala worksheet") //> Welcome to the Scala worksheet val dx = 0.0001 //> dx : Double = 1.0E-4 // val x = Range.Double(0.0,1.0,dx) // val y = x.map(v => 1.00/(1.00 + v * v)) // val pi = y.reduce(_+_)*dx *4 val pi = Range.Double(0.0,1.0,dx) .map(v => 1.00/(1.00 + v * v)) .reduce(_+_)*dx *4 //> pi : Double = 3.14169265192314 }