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    Ds\Map::xor

    (PECL ds >= 1.0.0)

    Ds\Map::xor — Creates a new map using keys of either the current instance or of another map, but not of both

    説明

    public Ds\Map::xor(Ds\Map $map): Ds\Map

    Creates a new map containing keys of the current instance as well as another map, but not of both.

    A ⊖ B = {x : x ∈ (A \ B) ∪ (B \ A)}

    パラメータ

    map

    The other map.

    戻り値

    A new map containing keys in the current instance as well as another map, but not in both.

    参考

    例

    例1 Ds\Map::xor() example

    <?php
    $a     = new \Ds\Map(["a" => 1, "b" => 2, "c" => 3]);
    $b = new \Ds\Map(["b" => 4, "c" => 5, "d" => 6]);

    print_r($a->xor($b));
    ?>

    上の例の出力は、 たとえば以下のようになります。

    Ds\Map Object
(
    [0] => Ds\Pair Object
        (
            [key] => a
            [value] => 1
        )

    [1] => Ds\Pair Object
        (
            [key] => d
            [value] => 6
        )

)

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