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Ds\Deque::allocate

(PECL ds >= 1.0.0)

Ds\Deque::allocate — Allocates enough memory for a required capacity

說(shuō)明

public Ds\Deque::allocate(int $capacity): void

Ensures that enough memory is allocated for a required capacity. This removes the need to reallocate the internal as values are added.

參數

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

沒(méi)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());
?>

以上例程的輸出類(lèi)似于：

int(8)
int(128)
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