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Scala example source code file (missingparams.scala)

This example Scala source code file (missingparams.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, boolean, boolean, foo, foo, int, int, none, some, test

The Scala missingparams.scala source code

/** Tests the optimiser. */

final class Foo(val x: Int) {
  def filter(p: Int => Boolean) =
    if (p(x)) Some(x) else None

  // test that the closure elimination is not wrongly replacing
  // 'that' by 'this'
  def intersect(that: Foo) = 
    filter { dummy => 
//      x // dummy
      that.x > 0
    }
}

object Test extends App {
  val foo1 = new Foo(42)
  val foo2 = new Foo(-42)

  println(foo1 intersect foo2)
}

Other Scala examples (source code examples)

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