Scala example source code file (arrayclone.scala)

This example Scala source code file (arrayclone.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

array, array, chararrayclone, doublearrayclone, doublearrayclone, floatarrayclone, longarrayclone, mangler, mangler, objectarrayclone, polymorphicarrayclone, shortarrayclone, t, t

The Scala arrayclone.scala source code

object Test extends App{
  BooleanArrayClone;
  ByteArrayClone;
  ShortArrayClone;
  CharArrayClone;
  IntArrayClone;
  LongArrayClone;
  FloatArrayClone;
  DoubleArrayClone;
  ObjectArrayClone;
  PolymorphicArrayClone;
}

object BooleanArrayClone{
  val it : Array[Boolean] = Array(true, false);
  val cloned = it.clone();
  assert(cloned.sameElements(it));
  cloned(0) = false;
  assert(it(0) == true) 
}

object ByteArrayClone{
  val it : Array[Byte] = Array(1, 0);
  val cloned = it.clone();
  assert(cloned.sameElements(it));
  cloned(0) = 0;
  assert(it(0) == 1) 
}

object ShortArrayClone{
  val it : Array[Short] = Array(1, 0);
  val cloned = it.clone();
  assert(cloned.sameElements(it));
  cloned(0) = 0;
  assert(it(0) == 1) 
}

object CharArrayClone{
  val it : Array[Char] = Array(1, 0);
  val cloned = it.clone();
  assert(cloned.sameElements(it));
  cloned(0) = 0;
  assert(it(0) == 1) 
}

object IntArrayClone{
  val it : Array[Int] = Array(1, 0);
  val cloned = it.clone();
  assert(cloned.sameElements(it));
  cloned(0) = 0;
  assert(it(0) == 1) 
}

object LongArrayClone{
  val it : Array[Long] = Array(1, 0);
  val cloned = it.clone();
  assert(cloned.sameElements(it));
  cloned(0) = 0;
  assert(it(0) == 1) 
}

object FloatArrayClone{
  val it : Array[Float] = Array(1, 0);
  val cloned = it.clone();
  assert(cloned.sameElements(it));
  cloned(0) = 0;
  assert(it(0) == 1) 
}

object DoubleArrayClone{
  val it : Array[Double] = Array(1, 0);
  val cloned = it.clone();
  assert(cloned.sameElements(it));
  cloned(0) = 0;
  assert(it(0) == 1) 
}

object ObjectArrayClone{
  val it : Array[String] = Array("1", "0");
  val cloned = it.clone();
  assert(cloned.sameElements(it));
  cloned(0) = "0";
  assert(it(0) == "1") 
}

object PolymorphicArrayClone{
  def testIt[T](it : Array[T], one : T, zero : T) = {
    val cloned = it.clone();
    assert(cloned.sameElements(it));
    cloned(0) = zero;
    assert(it(0) == one) 
  }  

  testIt(Array("one", "two"), "one", "two");

  class Mangler[T: Manifest](ts : T*){
    // this will always be a BoxedAnyArray even after we've unboxed its contents.
    val it = ts.toArray[T]; 
  }

  val mangled = new Mangler[Int](0, 1);

  val y : Array[Int] = mangled.it; // make sure it's unboxed

  testIt(mangled.it, 0, 1);
}