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

	namespace Keruald\OmniTools\Collections;

	abstract class BaseCollection {

	///
	/// Constructors
	///

	public static abstract function from (iterable $items) : static;

	///
	/// Constants
	///

	const CB_ZERO_ARG = "Callback function should have at least one argument";

	///
	/// Getters
	///

	public abstract function toArray () : array;

	///
	/// Properties
	///

	public abstract function count () : int;

	public abstract function isEmpty () : bool;

	}