public class TestClass<G>
{
	private G[] _buffer = new G[30];
	private int _count = 0;
	
	public void add(owned G item)
	{
		_buffer[_count++] = (owned) item;
	}
	
	public G @get(int index)
	{
		return _buffer[index];
	}
	
	public G[] to_array()
	{
		return _buffer[0:_count];
	}
	
	public G[] to_array_alt()
	{
		G[] temp = new G[_count];
		
		for (int ii = 0; ii < _count; ii++)
			temp[ii] = _buffer[ii];
			
		return temp;
	}
}

private void print_array0(int[] array)
{
	stdout.printf("\tOriginal:\t");
	foreach (int i in array)
		stdout.printf("%d ", i);
	stdout.printf("\n");
}

private void print_array1(int[] array)
{
	stdout.printf("\tNot Boxed:\t");
	foreach (int i in array)
		stdout.printf("%d ", i);
	stdout.printf("\n");
}

private void print_array2(int?[] array)
{
	stdout.printf("\tBoxed:\t\t");
	foreach (int? i in array)
		stdout.printf("%d ", (!)i);
	stdout.printf("\n");
}

public int main(string[] args)
{
	int[] original = {1, 4, 8, 2};
	TestClass<int> not_boxed = new TestClass<int>();
	TestClass<int?> boxed = new TestClass<int?>();
	
	foreach (int i in original)
	{
		not_boxed.add(i);
		boxed.add(i);
	}

	
	print_array0(original);

	stdout.printf("\n");
	
	stdout.printf("Array Slice\n");
	print_array1(not_boxed.to_array());
	print_array2(boxed.to_array());
	
	stdout.printf("\n");
	
	stdout.printf("For-loop Copy\n");
	print_array1(not_boxed.to_array_alt());
	print_array2(boxed.to_array_alt());
	
	return 0;
}