public function test_combinatoin_2()
{
$arr = array(1, 2, 3, 4);
Enumerator::combination_($arr, 1, function ($key, &$value) {
if ($value[0] == 3) {
throw new ContinueException();
}
$value[0]++;
});
$this->assertEquals(array(array(2), array(3), array(3), array(5)), $arr);
}
public function test_combinatoin_4()
{
// tests destructive
$arr = array(1, 2, 3, 4);
Enumerator::combination_($arr, 4, function ($key, &$value) {
foreach ($value as &$v) {
$v++;
}
});
$this->assertEquals(array(array(2, 3, 4, 5)), $arr);
}