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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.
*/
[GenericAccessors]
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);
/**
* The read-only view of this set.
*/
public virtual new MultiSet<G> read_only_view {
owned get {
return new ReadOnlyMultiSet<G> (this);
}
}
/**
* Returns an immutable empty set.
*
* @return an immutable empty set
*/
public static Set<G> empty<G> () {
return new HashSet<G> ().read_only_view;
}
}
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