(PECL ds >= 1.0.0)
Ds\Set::allocate — Allocates enough memory for a required capacity
$capacity
) : voidAllocates enough memory for a required capacity.
capacityThe 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.
没有返回值。
Example #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)