// Persist library : Persistence layer
// Copyright (C) 2003 Vincent Daron
//
// 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., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
using System;
using System.Collections;
namespace Persist.Tools{
/// <summary>
/// Very Basic Set implementation base on ArrayList
/// </summary>
public class HashSet : System.Collections.ArrayList
{
/// <summary>
/// Add an item into the set if it has'nt be inserted before
/// </summary>
/// <param name="obj">the object to insert</param>
/// <returns>the index of the object in the set</returns>
public override int Add(object obj)
{
if(!base.Contains(obj))
{
return base.Add(obj);
}
return base.IndexOf(obj);
}
}
}
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