Ds\Vector::first

    (PECL ds >= 1.0.0)

    Ds\Vector::first — Returns the first value in the vector

    Description

    public Ds\Vector::first(): mixed

    Returns the first value in the vector.

    Parameters

    This function has no parameters.

    Return Values

    The first value in the vector.

    Errors/Exceptions

    UnderflowException if empty.

    Examples

    Example #1 Ds\Vector::first() example

    <?php
    $vector     = new \Ds\Vector([1, 2, 3]);
    var_dump($vector->first());
    ?>

    The above example will output something similar to:

    int(1)

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