(PECL ds >= 1.0.0)
Ds\Deque::copy — Returns a shallow copy of the deque
此函数没有参数。
A shallow copy of the deque.
示例 #1 Ds\Deque::copy() example
<?php
$a = new \Ds\Deque([1, 2, 3]);
$b = $a->copy();
$b->push(4);
print_r($a);
print_r($b);
?>
以上示例的输出类似于:
Ds\Deque Object ( [0] => 1 [1] => 2 [2] => 3 ) Ds\Deque Object ( [0] => 1 [1] => 2 [2] => 3 [3] => 4 )