/*
 *
 * Licensed to the Apache Software Foundation (ASF) under one
 * or more contributor license agreements.  See the NOTICE file
 * distributed with this work for additional information
 * regarding copyright ownership.  The ASF licenses this file
 * to you under the Apache License, Version 2.0 (the
 * "License"); you may not use this file except in compliance
 * with the License.  You may obtain a copy of the License at
 *
 *   http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing,
 * software distributed under the License is distributed on an
 * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
 * KIND, either express or implied.  See the License for the
 * specific language governing permissions and limitations
 * under the License.
 *
*/

using System;
using System.Collections.Generic;
using System.Diagnostics;
using System.IO;
using System.Text;
using Lucene.Net.Analysis.Standard;
using Lucene.Net.QueryParsers;
using Lucene.Net.Store;
using NUnit.Framework;
using Version = Lucene.Net.Util.Version;

namespace Lucene.Net.Search.Vectorhighlight
{
    static class Extensions
    {
        public static V Get<K, V>(this Dictionary<K, V> list, K key)
        {
            if (key == null) return default(V);
            V v = default(V);
            list.TryGetValue(key, out v);
            return v;
        }
    }

    public class HashSet<T> : Dictionary<T, T>
    {
        public void Add(T key)
        {
            base.Add(key, key);
        }
    }
}