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/* multiset.vala
 *
 * Copyright (C) 2009  Ali Sabil
 *
 * This library is free software; you can redistribute it and/or
 * modify it under the terms of the GNU Lesser General Public
 * License as published by the Free Software Foundation; either
 * version 2.1 of the License, or (at your option) any later version.

 * This library is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
 * Lesser General Public License for more details.

 * You should have received a copy of the GNU Lesser General Public
 * License along with this library; if not, write to the Free Software
 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301  USA
 *
 * Author:
 * 	Ali Sabil <ali.sabil@gmail.com>
 */

/**
 * A collection with duplicate elements.
 */
public interface Gee.MultiSet<G> : Collection<G> {
	/**
	 * Returns the number of occurences of an item in this multiset.
	 *
	 * @param item the item to count occurences of
	 *
	 * @return     the number of occurences of the item in this multiset.
	 */
	public abstract int count (G item);
}