Raxos

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IntArrayList ​

Raxos\Collection\IntArrayList is an ArrayList that only accepts integers. It implements ValidatedArrayListInterface and adds a sum helper.

php
class IntArrayList extends ArrayList implements ValidatedArrayListInterface

Methods ​

sum ​

php
public function sum(): int

Returns the sum of all items as an int.

validateItem ​

php
public static function validateItem(mixed $item): void

Throws a CollectionInvalidTypeException when the item is not an int. This runs for every item when the list is built through of().

Example ​

php
<?php
declare(strict_types=1);

use Raxos\Collection\IntArrayList;

$quantities = IntArrayList::of([3, 5, 8]);

$quantities->sum(); // 16

See also the typed lists concept page.