Ds\Deque::allocate
(PECL ds >= 1.0.0)
Ds\Deque::allocate — Allocates enough memory for a required capacity
说明
public Ds\Deque::allocate
( int
$capacity
) : voidEnsures that enough memory is allocated for a required capacity. This removes the need to reallocate the internal as values are added.
参数
-
capacity -
The number of values for which capacity should be allocated.
Note:
Capacity will stay the same if this value is less than or equal to the current capacity.
Note:
Capacity will always be rounded up to the nearest power of 2.
返回值
没有返回值。
范例
Example #1 Ds\Deque::allocate() example
<?php
$deque = new \Ds\Deque();
var_dump($deque->capacity());
$deque->allocate(100);
var_dump($deque->capacity());
?>
以上例程的输出类似于：
int(8) int(128)