Updates a value at a given index

# Ds\Vector::set

(PECL ds >= 1.0.0)

Ds\Vector::set — Updates a value at a given index

### 说明

public function Ds\Vector::set(int `$index`, mixed `$value`): void

Updates a value at a given index.

### 参数

`index`

  The index of the value to update.

`value`

  The new value.

### 返回值

没有返回值。

### 错误／异常

OutOfRangeException if the index is not valid.

### 示例

示例 #1 Ds\Vector::set() example

    <?php
    $vector = new \Ds\Vector(["a", "b", "c"]);

    $vector->set(1, "_");
    print_r($vector);
    ?>

以上示例的输出类似于：

    Ds\Vector Object
    (
        [0] => a
        [1] => _
        [2] => c
    )

示例 #2 Ds\Vector::set() example using array syntax

    <?php
    $vector = new \Ds\Vector(["a", "b", "c"]);

    $vector[1] = "_";
    print_r($vector);
    ?>

以上示例的输出类似于：

    Ds\Vector Object
    (
        [0] => a
        [1] => _
        [2] => c
    )

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