<?php
/**
 * @package	HikaShop for Joomla!
 * @version	2.3.0
 * @author	hikashop.com
 * @copyright	(C) 2010-2014 HIKARI SOFTWARE. All rights reserved.
 * @license	GNU/GPLv3 http://www.gnu.org/licenses/gpl-3.0.html
 */
defined('_JEXEC') or die('Restricted access');
?><?php

class Stripe_Util_Set
{
  private $_elts;

  public function __construct($members=array())
  {
    $this->_elts = array();
    foreach ($members as $item)
      $this->_elts[$item] = true;
  }

  public function includes($elt)
  {
    return isset($this->_elts[$elt]);
  }

  public function add($elt)
  {
    $this->_elts[$elt] = true;
  }

  public function discard($elt)
  {
    unset($this->_elts[$elt]);
  }

  public function toArray()
  {
    return array_keys($this->_elts);
  }
}
