TraversableUtilities.php
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TraversableUtilities.php
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	<?php
	declare(strict_types=1);

	namespace Keruald\OmniTools\Collections;

	use Countable;
	use TypeError;

	class TraversableUtilities {

	public static function count ($countable) : int {
	if (is_array($countable)) {
	return count($countable);
	}

	if ($countable instanceof Countable) {
	return $countable->count();
	}

	if ($countable === null \|\| $countable === false) {
	return 0;
	}

	throw new TypeError;
	}

	}