Ds\Map::union

(PECL ds >= 1.0.0)

Ds\Map::unionCreates a new map using values from the current instance and another map

Description

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

Creates a new map that contains the pairs of the current instance as well as the pairs of another map.

A ∪ B = {x: x ∈ A ∨ x ∈ B}

Note:

Values of the current instance will be overwritten by those provided where keys are equal.

Liste de paramètres

map

The other map, to combine with the current instance.

Valeurs de retour

A new map containing all the pairs of the current instance as well as another map.

See Also

Exemples

Exemple #1 Ds\Map::union() example

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

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

L'exemple ci-dessus va afficher quelque chose de similaire à :

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

    [1] => Ds\Pair Object
        (
            [key] => b
            [value] => 3
        )

    [2] => Ds\Pair Object
        (
            [key] => c
            [value] => 4
        )

    [3] => Ds\Pair Object
        (
            [key] => d
            [value] => 5
        )

)
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