Returns the current capacity

# Ds\Sequence::capacity

(PECL ds >= 1.0.0)

Ds\Sequence::capacity — Returns the current capacity

### 说明

abstract public function Ds\Sequence::capacity(): int

Returns the current capacity.

### 参数

此函数没有参数。

### 返回值

The current capacity.

### 示例

示例 #1 Ds\Sequence::capacity() example

    <?php
    $sequence = new \Ds\Vector();
    var_dump($sequence->capacity());

    $sequence->push(...range(1, 50));
    var_dump($sequence->capacity());

    $sequence[] = "a";
    var_dump($sequence->capacity());
    ?>

以上示例的输出类似于：

    int(10)
    int(50)
    int(75)

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