Ds\Set::allocate

(PECL ds >= 1.0.0)

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

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

Allocates enough memory for a required capacity.

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.

没有返回值。

示例 #1 Ds\Set::allocate() example


<?php
$set = new \Ds\Set();
var_dump($set->capacity());

$set->allocate(100);
var_dump($set->capacity());
?>

以上例程的输出类似于：

int(16)
int(128)

There are no user contributed notes for this page.

IT PHP 编程语言 Linux 开发编程科技 Elasticsearch HTML/CSS/XML 网络 JAVA NoSQL 数据库面试 C/C++ Golang Git 算法操作系统正则表达式 Redis 互联网 MySql JavaScript 运维软件国际架构设计 Mac OS TCP/IP Excel Vim Windows Socket Oracle VR MongoDB Python 运营 MemCache 商业硬件电子娱乐设计 nginx 摄影游戏 WordPress HTTP 团建数码电器

略微加速