Allocates enough memory for a required capacity

# Ds\Stack::allocate

(PECL ds >= 1.0.0)

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

### 説明

public Ds\Stack::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。