<?php
$deque = new \Ds\Deque([1, 2, 3]);
var_dump($deque->merge([4, 5, 6]));
var_dump($deque);
?>
The above example will output
something similar to:
object(Ds\Deque)#2 (6) {
[0]=>
int(1)
[1]=>
int(2)
[2]=>
int(3)
[3]=>
int(4)
[4]=>
int(5)
[5]=>
int(6)
}
object(Ds\Deque)#1 (3) {
[0]=>
int(1)
[1]=>
int(2)
[2]=>
int(3)
}