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    Ds\Deque::apply

    (PECL ds >= 1.0.0)

    Ds\Deque::apply — Updates all values by applying a callback function to each value.

    설명

    public void Ds\Deque::apply ( callable $callback )

    Updates all values by applying a callback function to each value in the deque.

    인수

    callback

    mixed callback ( mixed $value )

    A callable to apply to each value in the deque.

    The callback should return what the value should be replaced by.

    반환값

    값을 반환하지 않습니다.

    예제

    Example #1 Ds\Deque::apply() example

    <?php
    $deque     = new \Ds\Deque([1, 2, 3]);
    $deque->apply(function($value) { return $value * 2; });

    print_r($deque);
    ?>

    위 예제의 출력 예시:

    Ds\Deque Object
(
    [0] => 2
    [1] => 4
    [2] => 6
)
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