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<?php |
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/** |
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* Xyster Framework |
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* |
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* This source file is subject to the new BSD license that is bundled |
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* with this package in the file LICENSE.txt. |
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* It is also available through the world-wide-web at this URL: |
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* http://www.opensource.org/licenses/bsd-license.php |
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* |
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* @category Xyster |
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* @package Xyster_Collection |
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* @copyright Copyright LibreWorks, LLC (http://libreworks.net) |
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* @license http://www.opensource.org/licenses/bsd-license.php New BSD License |
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*/ |
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namespace Xyster\Collection; |
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/** |
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* Abstract class for no-duplicate collections |
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* |
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* @category Xyster |
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* @package Xyster_Collection |
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* @copyright Copyright LibreWorks, LLC (http://libreworks.net) |
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* @license http://www.opensource.org/licenses/bsd-license.php New BSD License |
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*/ |
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abstract class AbstractSet extends AbstractCollection implements ISet |
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{ |
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/** |
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* Adds an item to the set |
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* |
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* @param mixed $item The item to add |
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* @return boolean Whether the set changed as a result of this method |
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*/ |
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public function add($item) |
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{ |
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if (!$this->contains($item)) { |
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return parent::add($item); |
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} |
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return false; |
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} |
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} |
