(PECL ds >= 1.0.0)
Ds\Deque::__construct — Creates a new instance
Creates a new instance, using either a traversable
object or an array for the initial values.
valuesA traversable object or an array to use for the initial values.
Example #1 Ds\Deque::__construct() example
<?php
$deque = new \Ds\Deque();
var_dump($deque);
$deque = new \Ds\Deque([1, 2, 3]);
var_dump($deque);
?>
以上例程的输出类似于：
object(Ds\Deque)#2 (0) {
}
object(Ds\Deque)#2 (3) {
[0]=>
int(1)
[1]=>
int(2)
[2]=>
int(3)
}