public function testConcat()
{
$l1 = new ArrayList([1, 2, 3]);
$l2 = new ArrayList([4, 5, 6]);
$l3 = $l1->concat($l2);
$this->assertCount(6, $l3);
}
public function offsetSet($offset, $value)
{
if (!\is_bool($value)) {
throw new \InvalidArgumentException('$value is not a bool');
}
//Expand the set if necessary
if ($offset >= $this->count()) {
$this->_List = $this->_List->concat(ArrayList::repeat(false, $offset - $this->count() + 1));
}
$this->_List->offsetSet($offset, (bool) $value);
}
