Tuple4.php
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Tuple4.php
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	<?php

	declare(strict_types=1);

	namespace Phan\Library;

	/**
	* A tuple of 4 elements.
	*
	* @template T0
	* The type of element zero
	*
	* @template T1
	* The type of element one
	*
	* @template T2
	* The type of element two
	*
	* @template T3
	* The type of element three
	*
	* @inherits Tuple3<T0, T1, T2>
	*
	* phpcs:disable PSR2.Classes.PropertyDeclaration.Underscore
	*/
	class Tuple4 extends Tuple3
	{
	/** @var int */
	public const ARITY = 4;

	/** @var T3 element 3 of this tuple (0-based index) */
	public $_3;

	/**
	* @param T0 $_0
	* The 0th element
	*
	* @param T1 $_1
	* The 1st element
	*
	* @param T2 $_2
	* The 2nd element
	*
	* @param T3 $_3
	* The 3rd element
	*/
	public function __construct($_0, $_1, $_2, $_3)
	{
	$this->_0 = $_0;
	$this->_1 = $_1;
	$this->_2 = $_2;
	$this->_3 = $_3;
	}

	/**
	* @return array{0:T0,1:T1,2:T2,3:T3}
	* An array of all elements in this tuple.
	*/
	public function toArray(): array
	{
	return [
	$this->_0,
	$this->_1,
	$this->_2,
	$this->_3,
	];
	}
	}