wehub-resource-sync
59 lines
1.8 KiB
C#
59 lines
1.8 KiB
C#
/*
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* QUANTCONNECT.COM - Democratizing Finance, Empowering Individuals.
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* Lean Algorithmic Trading Engine v2.0. Copyright 2014 QuantConnect Corporation.
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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using System.Collections.Generic;
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namespace QuantConnect.Util
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{
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/// <summary>
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/// Helper method for a limited length queue which self-removes the extra elements.
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/// http://stackoverflow.com/questions/5852863/fixed-size-queue-which-automatically-dequeues-old-values-upon-new-enques
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/// </summary>
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/// <typeparam name="T">The type of item the queue holds</typeparam>
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public class FixedSizeQueue<T> : Queue<T>
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{
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private int _limit = -1;
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/// <summary>
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/// Max Length
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/// </summary>
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public int Limit
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{
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get { return _limit; }
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set { _limit = value; }
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}
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/// <summary>
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/// Create a new fixed length queue:
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/// </summary>
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public FixedSizeQueue(int limit)
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: base(limit)
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{
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Limit = limit;
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}
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/// <summary>
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/// Enqueue a new item int the generic fixed length queue:
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/// </summary>
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public new void Enqueue(T item)
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{
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while (Count >= Limit)
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{
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Dequeue();
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}
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base.Enqueue(item);
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}
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}
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} |