Hello world,

I have experienced a strange behavior of the subset() function, when used in conjunction with object arrays..

It seems the subset(array, offset) syntax doesn't work when the array consists of objects. A workaround is to always use the subset(array, offset, length) syntax.

See code example below.

Can anyone explain this, or is this perhaps a bug..

regards prinds

Code:

void setup()
{
  println("----- test 1 ------");
  int[] numbers = new int[3];
  numbers[0] = 90;
  numbers[1] = 150;
  numbers[2] = 30;

  // subset works fine with normal arrays
  int[] somenumbers = subset( numbers, 1 );

  for( int i=0; i<somenumbers.length; i++ )
  {
    println(i + ", " + somenumbers[i]);
  }

  println("----- test 2 ------");

  Test[] tests = new Test[3];
  tests[0] = new Test(90);
  tests[1] = new Test(150);
  tests[2] = new Test(30);

  // without the length parameter subset unexpectedly return the first two elements of the array
  Test[] sometests = (Test[]) subset( tests, 1 );

  for( int i=0; i<sometests.length; i++ )
  {
    println(i + ", " + sometests[i].val);
  }


  println("----- test 3 ------");

  // adding the length parameter makes the subset function work
  Test[] somenewtests = (Test[]) subset( tests, 1, 2 );

  for( int i=0; i<somenewtests.length; i++ )
  {
    println(i + ", " + somenewtests[i].val);
  }

}

class Test
{
  int val;
  Test( int val )
  {
    this.val = val;
  }
}