WithCollection.php
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WithCollection.php
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	<?php

	namespace Keruald\OmniTools\Collections;

	use OutOfRangeException;

	trait WithCollection {

	abstract function count () : int;
	abstract function toArray() : array;

	public function first () : mixed {
	foreach ($this->toArray() as $item) {
	return $item;
	}

	throw new OutOfRangeException("The collection is empty.");
	}

	public function firstOr (mixed $default) : mixed {
	return match ($this->count()) {
	0 => $default,
	default => $this->first(),
	};
	}

	}