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Ds\Vector::apply

PHP function Edit on GitHub ✎

(PECL ds >= 1.0.0)

Updates all values by applying a callback function to each value

Description

Ds\Vector::apply(callable $callback): void

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

callback

callback(mixed $value): mixed

A callable to apply to each value in the vector.

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

Void

php

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

print_r($vector);
?>

The above example will output something similar to:

output

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

Source: reference/ds/ds/vector/apply.xml · from the official PHP manual (php/doc-en)