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.
注意:
Capacity will stay the same if this value is less than or equal to the current capacity.
注意:
Capacity will always be rounded up to the nearest power of 2.
返回值
没有返回值。
范例
示例 #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)
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