(PECL ds >= 1.0.0)
Ds\Stack::allocate — Allocates enough memory for a required capacity
Ensures that enough memory is allocated for a required capacity. This removes the need to reallocate the internal as values are added.
capacityThe 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.
値を返しません。