(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.
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.
No value is returned.
Example #1 Ds\Set::allocate() example
<?php $set = new \Ds\Set(); var_dump($set->capacity()); $set->allocate(100); var_dump($set->capacity()); ?>
The above example will output something similar to:
int(16) int(128)
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https://www.php.net/manual/en/ds-set.allocate.php