Scala example source code file (pat_unreachable.scala)

This example Scala source code file (pat_unreachable.scala) is included in the DevDaily.com "Java Source Code Warehouse" project. The intent of this project is to help you "Learn Java by Example" ^TM.

Java - Scala tags/keywords

app, app, list, list, seq, seq, test, test

The Scala pat_unreachable.scala source code

object Test extends App {
  def unreachable1(xs:Seq[Char]) = xs match {
    case Seq(x, y, _*) => x::y::Nil
    case Seq(x, y, z, w) => List(z,w) // redundant!
  }
  def unreachable2(xs:Seq[Char]) = xs match {
    case Seq(x, y, _*) => x::y::Nil
    case Seq(x, y) => List(x, y)
  }
  
  def not_unreachable(xs:Seq[Char]) = xs match {
    case Seq(x, y, _*) => x::y::Nil
    case Seq(x) => List(x)
  }
  def not_unreachable2(xs:Seq[Char]) = xs match {
    case Seq(x, y) => x::y::Nil
    case Seq(x, y, z, _*) => List(x,y)
  }
}