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   1  <?php
   2  
   3  /**
   4   * PHPExcel_IComparable
   5   *
   6   * This library is free software; you can redistribute it and/or
   7   * modify it under the terms of the GNU Lesser General Public
   8   * License as published by the Free Software Foundation; either
   9   * version 2.1 of the License, or (at your option) any later version.
  10   *
  11   * This library is distributed in the hope that it will be useful,
  12   * but WITHOUT ANY WARRANTY; without even the implied warranty of
  13   * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  14   * Lesser General Public License for more details.
  15   *
  16   * You should have received a copy of the GNU Lesser General Public
  17   * License along with this library; if not, write to the Free Software
  18   * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301  USA
  19   *
  20   * @category   PHPExcel
  21   * @package    PHPExcel
  22   * @copyright  Copyright (c) 2006 - 2015 PHPExcel (http://www.codeplex.com/PHPExcel)
  23   * @license    http://www.gnu.org/licenses/old-licenses/lgpl-2.1.txt    LGPL
  24   * @version    ##VERSION##, ##DATE##
  25   */
  26  interface PHPExcel_IComparable
  27  {
  28      /**
  29       * Get hash code
  30       *
  31       * @return string    Hash code
  32       */
  33      public function getHashCode();
  34  }