<?php
$vector = new \Ds\Vector();
var_dump($vector);
$vector = new \Ds\Vector([1, 2, 3]);
var_dump($vector);
?>
The above example will output
something similar to:
object(Ds\Vector)#2 (0) {
}
object(Ds\Vector)#2 (3) {
[0]=>
int(1)
[1]=>
int(2)
[2]=>
int(3)
}