Php/docs/ds-sequence.allocate

• PHP Manual
• Sequence
• Allocates enough memory for a required capacity

Ds\Sequence::allocate

(PECL ds >= 1.0.0)

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

説明

abstract public Ds\Sequence::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.

パラメータ

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.

返り値

値を返しません。

例

例1 Ds\Sequence::allocate() example

<?php$sequence = new \Ds\Vector();var_dump($sequence->capacity());$vector->allocate(100);var_dump($sequence->capacity());?>

上の例の出力は、 たとえば以下のようになります。

int(10)
int(100)