Ds\Map::apply

    (PECL ds >= 1.0.0)

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

    Descripción

    publicDs\Map::apply(callable$callback): void

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

    Parámetros

    callback

    callback(mixed$key, mixed$value): mixed

    A callable to apply to each value in the map.

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

    Valores devueltos

    No devuelve ningún valor.

    Ejemplos

    Ejemplo #1 Ds\Map::apply() example

    <?php
    $map     = new \Ds\Map(["a" => 1, "b" => 2, "c" => 3]);
    $map->apply(function($key, $value) { return $value * 2; });

    print_r($map);
    ?>

    El resultado del ejemplo sería algo similar a:

    Ds\Map Object ( [0] => Ds\Pair Object ( [key] => a [value] => 2 ) [1] => Ds\Pair Object ( [key] => b [value] => 4 ) [2] => Ds\Pair Object ( [key] => c [value] => 6 ) )
    To Top